Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2017	Feb. 16, 2018	Jun. 30, 2017
Document And Entity Information
Entity Registrant Name	TILE SHOP HOLDINGS, INC.
Entity Central Index Key	0001552800
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Fiscal Period Focus	FY
Document Period End Date	Dec. 31, 2017
Document Fiscal Year Focus	2017
Current Fiscal Year End Date	--12-31
Trading Symbol	tts
Amendment Flag	false
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding (in shares)		52,152,031
Entity Public Float			$ 819,229,877

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 6,621	$ 6,067
Restricted cash	855	3,000
Trade receivables, net	2,381	2,414
Inventories	85,259	74,295
Income tax receivable	5,726	1,670
Other current assets, net	4,717	8,755
Total Current Assets	105,559	96,201
Property, plant and equipment, net	151,405	141,037
Deferred tax assets	11,654	21,391
Long-term restricted cash		3,881
Other assets	2,107	2,763
Total Assets	270,725	265,273
Current liabilities:
Accounts payable	30,771	20,321
Current portion of long-term debt	8,833	6,286
Income tax payable	17	120
Other accrued liabilities	22,413	33,461
Total Current Liabilities	62,034	60,188
Long-term debt, net	18,182	22,126
Capital lease obligation, net	576	697
Deferred rent	41,290	37,595
Other long-term liabilities	4,769	5,768
Total Liabilities	126,851	126,374
Stockholders’ Equity:
Common stock, par value $0.0001; authorized: 100,000,000 shares; issued and outstanding: 52,156,850 and 51,607,143 shares, respectively	5	5
Preferred stock, par value $0.0001; authorized: 10,000,000 shares; issued and outstanding: 0 shares
Additional paid-in-capital	180,109	185,998
Accumulated deficit	(36,239)	(47,058)
Accumulated other comprehensive loss	(1)	(46)
Total Stockholders' Equity	143,874	138,899
Total Liabilities and Stockholders' Equity	$ 270,725	$ 265,273

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2017	Dec. 31, 2016
Consolidated Balance Sheets [Abstract]
Common stock, par value (per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	52,156,850	51,607,143
Common stock, shares outstanding	52,156,850	51,607,143
Preferred stock, par value (per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statements of Operations [Abstract]
Net sales	$ 344,600	$ 324,157	$ 292,987
Cost of sales	108,378	97,261	89,377
Gross profit	236,222	226,896	203,610
Selling, general and administrative expenses	210,376	193,983	174,384
Income from operations	25,846	32,913	29,226
Interest expense	(1,857)	(1,715)	(2,584)
Other income (expense)	170	141	130
Income before income taxes	24,159	31,339	26,772
Provision for income taxes	(13,340)	(12,876)	(11,076)
Net income	$ 10,819	$ 18,463	$ 15,696
Income per common share:
Basic	$ 0.21	$ 0.36	$ 0.31
Diluted	$ 0.21	$ 0.36	$ 0.31
Weighted average shares outstanding:
Basic	51,700,045	51,418,600	51,161,059
Diluted	51,927,877	51,880,113	51,304,982

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Net income	$ 10,819	$ 18,463	$ 15,696
Currency translation adjustment	45	(35)	(11)
Other comprehensive income (loss)	45	(35)	(11)
Comprehensive income	$ 10,864	$ 18,428	$ 15,685

Consolidated Statements of Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Total
Balance at Dec. 31, 2014	$ 5,000	$ 174,371,000	$ (80,681,000)		$ 93,695,000
Balance (in shares) at Dec. 31, 2014	51,314,005
Issuance of restricted shares
Issuance of restricted shares (in shares)	54,036
Stock based compensation		$ 5,545,000			$ 5,545,000
Stock option exercises		276,000			276,000
Stock option exercises (in shares)	69,932
Foreign currency translation adjustments				$ (11,000)	(11,000)
Net income			$ 15,696,000		15,696,000
Balance at Dec. 31, 2015	$ 5,000	180,192,000	(64,985,000)	(11,000)	115,201,000
Balance (in shares) at Dec. 31, 2015	51,437,973
Reclassification of impact of ASU 2016-09		687,000	(536,000)		151,000
Adjusted balance	$ 5,000	$ 180,879,000	$ (65,521,000)	$ (11,000)	$ 115,352,000
Issuance of restricted shares
Issuance of restricted shares (in shares)	73,384
Stock based compensation		$ 4,333,000			$ 4,333,000
Stock option exercises		842,000			842,000
Stock option exercises (in shares)	95,786
Tax withholdings related to net share settlements of stock based compensation awards		(56,000)			(56,000)
Foreign currency translation adjustments				$ (35,000)	(35,000)
Net income			$ 18,463,000		18,463,000
Balance at Dec. 31, 2016	$ 5,000	$ 185,998,000	$ (47,058,000)	$ (46,000)	$ 138,899,000
Balance (in shares) at Dec. 31, 2016	51,607,143				51,607,143
Issuance of restricted shares
Issuance of restricted shares (in shares)	324,184
Cancellation of restricted shares (in shares)	(87,849)
Stock based compensation		$ 3,156,000			$ 3,156,000
Stock option exercises	$ 313,372	1,639,000			1,639,000
Tax withholdings related to net share settlements of stock based compensation awards		(318,000)			(318,000)
Dividends paid		(10,366,000)			(10,366,000)
Foreign currency translation adjustments				$ 45,000	45,000
Net income			$ 10,819,000		10,819,000
Balance at Dec. 31, 2017	$ 5,000	$ 180,109,000	$ (36,239,000)	$ (1,000)	$ 143,874,000
Balance (in shares) at Dec. 31, 2017	52,156,850				52,156,850

Consolidated Statements Cash Flows - USD ($)	12 Months Ended
Consolidated Statements Cash Flows - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows From Operating Activities
Net income	$ 10,819,000	$ 18,463,000	$ 15,696,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation & amortization	26,239,000	23,042,000	22,236,000
Amortization of debt issuance costs	691,000	487,000	308,000
Debt issuance cost writeoff			194,000
Loss on disposals of property, plant and equipment	210,000	447,000	143,000
Impairment charges of property, plant and equipment	1,072,000	0	0
Deferred rent	3,884,000	2,382,000	2,785,000
Stock based compensation	3,156,000	4,333,000	5,545,000
Deferred income taxes	9,737,000	(395,000)	5,743,000
Changes in operating assets and liabilities:
Trade receivables	33,000	(448,000)	(254,000)
Inventories	(10,964,000)	(4,417,000)	(1,021,000)
Prepaid expenses and other current assets	4,159,000	(5,849,000)	(1,387,000)
Accounts payable	12,048,000	4,195,000	945,000
Income tax receivable / payable	(4,159,000)	(1,917,000)	5,304,000
Accrued expenses and other liabilities	(11,234,000)	13,229,000	4,027,000
Net cash provided by operating activities	45,691,000	53,552,000	60,264,000
Cash Flows From Investing Activities
Purchases of property, plant and equipment	(40,556,000)	(27,256,000)	(18,994,000)
Proceeds from the sale of property, plant and equipment	7,000	4,000
Net cash used in investing activities	(40,549,000)	(27,252,000)	(18,994,000)
Cash Flows From Financing Activities
Release of restricted cash	6,026,000	1,926,000
Payments of long-term debt and capital lease obligations	(36,575,000)	(37,822,000)	(124,025,000)
Advances on line of credit	35,000,000	10,000,000	88,000,000
Dividends paid	(10,366,000)
Contributions to NMTC fund		(6,683,000)
Payment of NMTC closing costs		1,269,000
Proceeds from exercise of stock options	1,639,000	842,000	276,000
Employee taxes paid for shares withheld	(318,000)	(56,000)
Debt issuance costs			(968,000)
Security deposits		(4,000)	29,000
Net cash used in financing activities	(4,594,000)	(30,528,000)	(36,688,000)
Effect of exchange rate changes on cash	6,000	(35,000)	(11,000)
Net change in cash	554,000	(4,263,000)	4,571,000
Cash and cash equivalents beginning of period	6,067,000	10,330,000	5,759,000
Cash and cash equivalents end of period	6,621,000	6,067,000	10,330,000
Supplemental disclosure of cash flow information
Purchases of property, plant and equipment included in accounts payable and accrued expenses	636,000	2,271,000	898,000
Cash paid for interest	1,822,000	1,811,000	2,692,000
Cash paid for incom taxes, net of refunds	$ 7,603,000	$ 15,162,000	$ 22,000

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2017

Summary of Significant Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Note 1: Summary of Significant Accounting Policies

Nature of Business

Tile Shop Holdings, Inc. (“Holdings”, and together with its wholly owned subsidiaries, the “Company”) was incorporated in Delaware in June 2012. On August 21, 2012, Holdings consummated the transactions contemplated pursuant to that certain Contribution and Merger Agreement dated as of June 27, 2012, among Holdings, JWC Acquisition Corp., a publicly-held Delaware corporation (“JWCAC”), The Tile Shop, LLC, a privately-held Delaware limited liability company (“The Tile Shop”), and certain other parties. Through a series of transactions, The Tile Shop was contributed to and became a subsidiary of Holdings and Holdings effected a business combination with and became a successor issuer to JWCAC. These transactions are referred to herein as the “Business Combination.”

The Company is a specialty retailer of natural stone and manufactured tiles, setting and maintenance materials, and related accessories in the United States. Natural stone products include marble, travertine, granite, quartz, sandstone, slate, and onyx tiles. Manufactured tiles include ceramic, porcelain, glass, cement, wood look, and metal tiles. The majority of the tile products are sold under the Company's proprietary Rush River and Fired Earth brand names. The Company purchases tile products, accessories and tools directly from its network of suppliers. The Company manufactures its own setting and maintenance materials, such as thinset and sealers under the Superior brand name. As of December 31, 2017, the Company operated 138 stores in 31 states and the District of Columbia, with an average size of approximately 20,300 square feet. The Company also sells products on its website.

Basis of Presentation

The consolidated financial statements of Holdings include the accounts of its wholly owned subsidiaries and variable interest entities, for which the Company is the primary beneficiary. See Note 11, “New Market Tax Credit,” for the discussion of financing arrangements involving certain entities that are variable interest entities that are included in these consolidated financial statements. All significant intercompany transactions have been eliminated in consolidation.

Use of Estimates

The preparation of financial statements in conformity with generally accepted accounting principles in the United States (“GAAP”) requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements. The Company’s estimates and judgments are based on historical experience and various other assumptions that it believes are reasonable under the circumstances. The amount of assets and liabilities reported on the Company's balance sheets and the amounts of income and expenses reported for each of the periods presented are affected by estimates and assumptions, which are used for, but not limited to, the accounting for revenue recognition and related reserves for sales returns, useful lives of property, plant and equipment, determining impairment of property, plant and equipment, valuation of inventory, and income taxes. Actual results may differ from these estimates.

Cash and Cash Equivalents

The Company had cash and cash equivalents of $6.6 million and $6.1 million at December 31, 2017 and 2016, respectively. The Company considers all highly liquid investments with a maturity date of three months or less when purchased to be cash equivalents. The Company accepts a range of debit and credit cards, and these transactions are generally transmitted to a bank for reimbursement within 24 hours. The payments due from the banks for these debit and credit card transactions are generally received, or settled, within 24 to 48 hours of the transmission date. The Company considers all debit and credit card transactions that settle in less than seven days to be cash and cash equivalents. Amounts due from the banks for these transactions classified as cash and cash equivalents totaled $3.1 million and $3.0 million at December 31, 2017 and 2016, respectively.

Restricted Cash

Cash and cash equivalents that are restricted as to withdrawal or are under the terms of use for current operations are included in the restricted balance on the balance sheet. Cash and cash equivalents that are restricted as to withdrawal and designated for expenditure in the construction of noncurrent assets are included in long-term restricted cash on the balance sheet.

Trade Receivables

Trade receivables are carried at original invoice amount less an estimate made for doubtful accounts. Management determines the allowance for doubtful accounts on a specific identification basis as well as by using historical experience applied to an aging of accounts. Trade receivables are written off when deemed uncollectible. Recoveries of trade receivables previously written off are recorded when received. The allowance for doubtful accounts was $0.1 million as of December 31, 2017 and 2016. The Company does not accrue interest on accounts receivable.

Inventories

Inventories are stated at the lower of cost (determined using the weighted average cost method) or net realizable value. Inventories consist primarily of merchandise held for sale. Our largest supplier accounted for approximately 18% of our total purchases in 2017. Inventories were comprised of the following at December 31, 2017 and 2016:



	2017		2016
	(in thousands)
Finished goods	$	65,843	$	61,949
Raw materials		1,660		2,312
Finished goods in transit		17,756		10,034
Total	$	85,259	$	74,295

The Company provides provisions for losses related to shrinkage and other amounts that are not otherwise expected to be fully recoverable. These provisions are calculated based on historical shrinkage, selling price, margin and current business trends. The provision for losses related to shrinkage and other amounts was $0.2 million for both December 31, 2017 and 2016.

Income Taxes

The Company recognizes deferred tax liabilities and assets for the expected future tax consequences of events that have been included in the financial statements or tax returns. Deferred tax liabilities and assets are determined based on the difference between the financial statement basis and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The Company estimates the degree to which tax assets and credit carry forwards will result in a benefit based on expected profitability by tax jurisdiction. A valuation allowance for such tax assets and loss carry forwards is provided when it is determined to be more likely than not that the benefit of such deferred tax asset will not be realized in future periods. If it becomes more likely than not that a tax asset will be used, the related valuation allowance on such assets would be reduced.

The Company records interest and penalties relating to uncertain tax positions in income tax expense. As of December 31, 2017 and 2016, the Company has not recognized any liabilities for uncertain tax positions nor has the Company accrued interest and penalties related to uncertain tax positions.

Revenue Recognition

The Company recognizes sales at the time the customer takes possession of the merchandise or when final delivery of the product has occurred. The Company recognizes service revenue, which consists primarily of freight charges for home delivery, when the service has been rendered. The Company is required to charge and collect sales and other taxes on sales to the Company's customers and remit these taxes back to government authorities. Total revenues do not include sales tax because the Company is a pass-through conduit for collecting and remitting sales tax. Sales are reduced by an allowance for anticipated sales returns that the Company estimates based on historical returns.

The Company generally requires customers to pay a deposit when purchasing inventory that is not regularly carried at the store location, or not currently in stock. These deposits are included in other accrued liabilities until the customer takes possession of the merchandise.

Sales Return Reserve

Customers may return purchased items for an exchange or refund. The process to establish a sales return reserve contains uncertainties because it requires management to make assumptions and to apply judgment to estimate future returns and exchanges. The customer may receive a refund or exchange the original product for a replacement of equal or similar quality for a period of six months from the time of original purchase. Products received back under this policy are reconditioned pursuant to state laws and resold. The Company records a reserve for estimated product returns, based on historical return trends together with current product sales performance. A summary of activity in the Company's sales returns reserve follows:



	2017		2016		2015
	(in thousands)
Balance at beginning of year	$	3,080	$	2,781	$	3,292
Additions to sales return reserve		30,177		31,334		26,522
Deductions from sales return reserve		(30,118)		(31,035)		(27,033)
Balance at end of year	$	3,139	$	3,080	$	2,781

Cost of Sales and Selling, General and Administrative Expenses

The primary costs classified in each major expense category are:

Cost of Sales

Materials cost;

Shipping and transportation expenses to bring products into the Company's distribution centers;

Custom and duty expenses;

Customer shipping and handling expenses;

Physical inventory losses;

Costs incurred at distribution centers in connection with the receiving process; and

Labor and overhead costs incurred to manufacture inventory

Selling, General & Administrative Expenses

All compensation costs for retail, corporate and distribution employees;

Occupancy, utilities and maintenance costs of retail and corporate facilities;

Shipping and transportation expenses to move inventory from the Company's distribution centers to the Company's stores;

Depreciation and amortization; and

Advertising costs

Stock Based Compensation

The Company recognizes expense for its stock based compensation based on the fair value of the awards on the grant date. Compensation expense is recognized on a straight-line basis over the requisite service period, net of actual forfeitures. Certain awards are also subject to forfeiture if the Company fails to attain its Adjusted EBITDA targets. The Company adjusts the cumulative expense recognized on awards with performance conditions based on a probability of achieving the performance condition. The Company may issue incentive awards in the form of stock options, restricted stock awards and other equity awards to employees and non-employee directors. Compensation cost is recognized ratably over the requisite service period of the related stock based compensation award.

Concentration of Risk

Financial instruments that potentially subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and bank deposits. By their nature, all such instruments involve risks including credit risks of non-performance by counterparties. A substantial portion of the Company's cash and cash equivalents and bank deposits are invested with banks with high investment grade credit ratings.

Segments

The Company’s operations consist primarily of retail sales of natural stone and manufactured tiles, setting and maintenance materials, and related accessories in stores located in the United States and through its website. The Company’s chief operating decision maker only reviews the consolidated results of the Company and accordingly, the Company has concluded it has one reportable segment.

Advertising Costs

Advertising costs were $9.5 million, $6.9 million and $6.5 million for the years ended December 31, 2017, 2016 and 2015, respectively, and are included in selling, general and administrative expenses in the consolidated statements of operations. The Company’s advertising consists primarily of digital media, direct marketing, events and traditional print media that is expensed at the time the media is distributed.

Pre-opening Costs

The Company’s pre-opening costs are those typically associated with the opening of a new store and generally include rent expense, compensation costs and promotional costs. The Company expenses pre-opening costs as incurred which are recorded in selling, general and administrative expenses. During the years ended December 31, 2017, 2016 and 2015, the Company reported pre-opening costs of $1.7 million, $0.9 million and $0.5 million, respectively.

Property, Plant and Equipment

Property, plant equipment and leasehold improvements are recorded at cost. Improvements are capitalized while repairs and maintenance costs are charged to selling, general and administrative expenses when incurred. Property, plant and equipment are depreciated or amortized using the straight-line method over each asset’s estimated useful life. Leasehold improvements and fixtures at leased locations are amortized using the straight-line method over the shorter of the lease term (including fixed rate renewal terms) or the estimated useful life of the asset. The cost and accumulated depreciation of assets sold or otherwise disposed of are removed from the accounts and any gain or loss thereon is included in other income and expense.



	Asset life (in years)
Buildings and building improvements		40
Leasehold improvements	8	–	26
Furniture and fixtures	2	–	7
Machinery and equipment	5	–	10
Computer equipment and software	3	–	7
Vehicles		5

The Company evaluates potential impairment losses on long-lived assets used in operations when events and circumstances indicate that the assets may be impaired, and the undiscounted cash flows estimated to be generated by those assets are less than the carrying amounts of those assets. If impairment exists and the undiscounted cash flows estimated to be generated by those assets are less than the carrying amount of those assets, an impairment loss is recorded based on the difference between the carrying value and fair value of the assets. During the year ended December 31, 2017, the Company recorded asset impairment charges of $1.1 million, which were classified in selling, general and administrative expenses. No impairment charges were recorded during the years ended December 31, 2016 or 2015.

Internal Use Software

The Company capitalizes software development costs incurred during the application development stage related to new software or major enhancements to the functionality of existing software that is developed solely to meet the Company’s internal operational needs and when there are no plans to market the software externally. Costs capitalized include external direct costs of materials and services and internal compensation costs. Any costs during the preliminary project stage or related to training or maintenance are expensed as incurred. Capitalization ceases when the software project is substantially complete and ready for its intended use. The capitalization and ongoing assessment of recoverability of development costs requires considerable judgment by management with respect to certain external factors, including, but not limited to, technological and economic feasibility, and estimated economic life. As of December 31, 2017 and 2016, $0.2 million and $0.4 million was included in computer equipment and software, respectively. The majority of the costs capitalized relate to amounts invoiced by external consultants. The costs are amortized over estimated useful lives of three to five years. There was $0.2 million, $0.5 million and $0.5 million depreciation expense related to capitalized software during the years ended December 31, 2017, 2016 and 2015, respectively.

Leases

The Company leases its store locations and corporate headquarters. We also lease our distribution center in Dayton, New Jersey. Assets held under capital leases are included in property, plant and equipment and amortization is included in depreciation expense. Operating lease rentals are expensed on a straight-line basis over the life of the lease beginning on the date the Company takes possession of the property. Tenant improvement allowances are amounts received from a lessor for improvements to leased properties and are amortized against rent expense over the life of the respective leases. At lease inception, the Company determines the lease term by assuming the exercise of those renewal options that are reasonably assured. The exercise of lease renewal options is at the Company’s sole discretion. The lease term is used to determine whether a lease is capital or operating and is used to calculate straight-line rent expense. Additionally, the depreciable life of leased assets and leasehold improvements is limited by the expected lease term. Rent expense is included in selling, general and administrative expenses. Certain leases require the Company to pay real estate taxes, insurance, maintenance and other operating expenses associated with the leased premises. These expenses are also classified in selling, general and administrative expenses.

Self-Insurance

The Company is self-insured for certain employee health and workers’ compensation claims. The Company estimates a liability for aggregate losses below stop-loss coverage limits based on estimates of the ultimate costs to be incurred to settle known claims and claims not reported as of the balance sheet date. The estimated liability is not discounted and is based on a number of assumptions and factors including historical trends, and economic conditions. As of December 31, 2017 and 2016, an accrual of $0.3 million and $0.7 million related to estimated employee health claims was included in other current liabilities, respectively. As of December 31, 2017 and 2016, an accrual of $1.3 million and $1.2 million related to estimated workers’ compensation claims was included in other current liabilities, respectively.

The Company has standby letters of credit outstanding related to the Company's workers’ compensation and employee health insurance policies. As of December 31, 2017 and 2016, the standby letters of credit totaled $1.1 million.

New Accounting Pronouncements

Recently Adopted Accounting Pronouncements

In July 2015, the Financial Accounting Standards Board (“FASB”) issued a standard that simplifies the subsequent measurement of inventory. Previously, an entity was required to measure inventory at the lower of cost or market, whereby market can be replacement cost, net realizable value, or net realizable value less an approximately normal profit margin. The changes required that inventory be measured at the lower of cost and net realizable value, thereby eliminating the use of the other two market methodologies. Net realizable value is defined as the estimated selling prices in the ordinary course of business less reasonably predictable costs of completion, disposal, and transportation. The standard was effective for the Company at the beginning of fiscal year 2017. The adoption of this new standard did not have a material effect on the Company’s financial statements.

Accounting Pronouncements Not Yet Adopted

In May 2014, the FASB issued a final standard on revenue from contracts with customers. This new standard introduces a comprehensive revenue recognition model that requires a company to recognize revenue to depict the transfer of goods or services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods or services. In 2016, the FASB issued several amendments to the standard, including principal versus agent considerations when another party is involved in providing goods or services to a customer, the application of identifying performance obligations, and the recognition of expected breakage amounts either proportionally in earnings as redemptions occur or when redemption is remote. Upon adoption of the new standard on January 1, 2018, the Company will present the gross sales returns reserve as a component of other accrued liabilities and establish a return asset that will be classified as a component of other current assets, net in the consolidated balance sheet. Currently, the Company presents its sales returns reserve net of the value of the return assets as a component of other accrued liabilities in the consolidated balance sheet. Based on the Company’s assessment to date, the underlying principles of the new standard, relating to the measurement of revenue and the timing of recognition, are closely aligned with the Company’s current business model and practices. As a result, other than the presentation of a gross sales returns reserve and a returns asset in the consolidated balance sheet, the adoption of this standard is not expected to have a material impact on the Company’s consolidated financial statements.

In February 2016, the FASB issued a standard that primarily requires organizations that lease assets to recognize the rights and obligations created by those leases on the consolidated balance sheet. The standard is effective in fiscal year 2019, with early adoption permitted. The Company expects the primary impact upon adoption will be the recognition, on a discounted basis, of minimum commitments under non-cancelable operating leases on the consolidated balance sheets resulting in the recording of right of use assets and lease obligations. The Company’s minimum commitments under non-cancelable operating leases are disclosed in Note 5. The Company has identified its lease management system and is in the process of identifying and evaluating the applicable leases. The Company is currently assessing the effect the new standard will have on its consolidated financial statements.

In August 2016, the FASB issued an accounting standards update with new guidance on how certain cash receipts and cash payments are presented and classified in the statement of cash flows. The amendments provide guidance on eight specific cash flow issues. The standards update is effective for the Company in fiscal year 2018 and should be applied retrospectively. The Company is currently assessing the effect the new standard will have on its consolidated financial statements.

In November 2016, the FASB issued new guidance on restricted cash on the statement of cash flows. The new guidance requires the classification and presentation of changes in restricted cash and cash equivalents in the statement of cash flows. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning and ending balances shown in the statement of cash flows. The new standard is effective for the Company in fiscal year 2018, with early adoption permitted. The guidance should be applied retrospectively after adoption. The Company’s restricted cash balance was $0.9 million as of December 31, 2017. Upon adopting the new standard, the Company anticipates that it will no longer present the release of restricted cash as a financing cash inflow. Instead, restricted cash and long-term restricted cash balances will be included in the beginning and ending cash, cash equivalents and restricted cash balances in the statement of cash flows.

Property, Plant and Equipment

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Note 2: Property Plant and Equipment:

Property, plant and equipment consisted of the following at December 31:



	2017		2016
	(in thousands)
Land	$	904	$	904
Building and building improvements		25,417		21,916
Leasehold improvements		84,677		77,404
Furniture and fixtures		129,876		119,589
Machinery and equipment		28,561		26,433
Computer equipment and software		29,851		24,002
Vehicles		3,463		3,136
Construction in progress		6,124		3,543
Total property, plant and equipment		308,873		276,927
Less accumulated depreciation		(157,468)		(135,890)
Total property, plant and equipment, net	$	151,405	$	141,037

Depreciation expense on property and equipment, including capital leases, was $26.2 million, $23.0 million and $22.2 million for the years ended December 31, 2017, 2016 and 2015, respectively. Property, plant and equipment is measured at fair value when an impairment is recognized and the related assets are written down to fair value. During the year ended December 31, 2017, the Company recorded asset impairment charges of $1.1 million. No impairment charges were recorded during the years ended December 31, 2016 or 2015.

Accrued Liabilities

12 Months Ended

Dec. 31, 2017

Accrued Liabilities [Abstract]

Accrued Liabilities

Note 3: Accrued Liabilities

Accrued liabilities consisted of the following at December 31:



	2017		2016
	(in thousands)
Shareholder litigation accrual	$	-	$	9,500
Customer deposits		8,064		7,742
Accrued wages and salaries		2,853		4,962
Sales return reserve		3,139		3,080
Payroll and sales taxes		2,491		2,691
Other current liabilities		5,866		5,486
Total accrued liabilities	$	22,413	$	33,461

Long-term Debt

12 Months Ended

Dec. 31, 2017

Long-term Debt [Abstract]

Long-term Debt

Note 4: Long-term Debt

Long-term debt, net of debt issuance costs, consisted of the following at December 31:



	2017				2016
			Unamortized				Unamortized
			Debt Issuance				Debt Issuance
	Principal		Costs		Principal		Costs
	(in thousands)
Term note payable - interest at 3.06% and 2.27% at December 31, 2017 and 2016	$	11,346	$	(36)	$	17,721	$	(114)
Commercial bank credit facility		15,000		-		10,000		-
Variable interest rate bonds (1.69% and 0.89% at December 31, 2017 and 2016), which mature April 1, 2023, collateralized by buildings and equipment		705		-		805		-
Total debt obligations		27,051		(36)		28,526		(114)
Less: current portion		8,855		(22)		6,350		(64)
Debt obligations, net of current portion	$	18,196	$	(14)	$	22,176	$	(50)

Approximate annual aggregate maturities of debts, net of debt issuance costs, are as follows: (in thousands):



Fiscal year
2018	$	8,855
2019		2,706
2020		15,115
2021		120
2022		125
Thereafter		130
Total future maturities payments	$	27,051
Less: debt issuance costs		36
Total future maturities payments, net of debt issuance costs	$	27,015

On June 2, 2015, the Company and its operating subsidiary, The Tile Shop, LLC, entered into a credit agreement with Fifth Third Bank, Bank of America, N.A., and Huntington National Bank (as amended, the “Credit Agreement”). On December 9, 2016, the Credit Agreement was amended to permit an additional New Markets Tax Credit Financing arrangement and on February 10, 2017, the Credit Agreement was amended to permit the Company to make certain dividend payments. The Credit Agreement again was amended on July 17, 2017 to adjust the consolidated fixed charge coverage ratio from 2.00:1.00 to 1.50:1.00 to provide greater flexibility in declaring and making dividend payments or other distributions to shareholders. The Credit Agreement provides the Company with a $125.0 million senior secured credit facility, comprised of a five-year $50.0 million term loan and a $75.0 million revolving line of credit. The Credit Agreement is secured by virtually all of the assets of the Company, including but not limited to, inventory, receivables, equipment and real property. Borrowings pursuant to the Credit Agreement bear interest at either a base rate or a LIBOR-based rate, at the option of the Company. The LIBOR-based rate will range from LIBOR plus 1.50% to 2.00%, depending on The Tile Shop’s leverage ratio. The base rate is equal to the greatest of: (a) the Federal funds rate plus 0.50%, (b) the Fifth Third Bank “prime rate,” and (c) the Eurodollar rate plus 1.00%, in each case plus 0.50% to 1.00% depending on The Tile Shop’s leverage ratio. At December 31, 2017 the base interest rate was 5.00% and the LIBOR-based interest rate was 3.06%. Borrowings outstanding consisted of $11.3 million on the term loan and $15.0 million on the revolving line of credit as of December 31, 2017. There was $60.0 million available for borrowing on the revolving line of credit as of December 31, 2017. The Company can elect to prepay the term loan without incurring a penalty. Additional borrowings pursuant to the Credit Agreement may be used to support the Company’s growth and for working capital purposes. The term loan requires quarterly principal payments as follows (in thousands):



Period
March 31, 2018 to June 30, 2018			1,875
September 30, 2018 to March 31, 2020			2,500

The Credit Agreement contains customary events of default, conditions to borrowings, and restrictive covenants, including restrictions on the Company’s ability to dispose of assets, make acquisitions, incur additional debt, incur liens, make investments, or enter into transactions with affiliates on other than terms that could be obtained in an arm’s length transaction. The Credit Agreement also includes financial and other covenants including covenants to maintain certain fixed charge coverage ratios and rent adjusted leverage ratios. The Company was in compliance with the covenants as of December 31, 2017.

Capital Leases:

The Company has one store lease that is accounted for as a capital lease. This lease expires in 2022. Assets acquired under capital leases are included in property, plant and equipment.

As of December 31, 2017, minimum lease payments under the Company's capital lease obligation were as follows (in thousands):



Fiscal year
2018	$	215
2019		216
2020		216
2021		215
2022		90
Thereafter		-
Less: amounts representing interest		(255)
Present value of future minimum lease payments		697
Less: current portion		121
Capital lease obligations, net of current portion	$	576

Commitments and Contingencies

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies [Abstract]

Commitments and Contingencies

Note 5: Commitments and Contingencies

Operating leases:

The Company leases buildings and office space under various operating lease agreements. In addition to rent, most leases require payments of real estate taxes, insurance, and common area maintenance. The leases generally have an initial lease term of ten to fifteen years and contain renewal options and escalation clauses. For leases that contain fixed escalation of the minimum rent or rent holidays, rent expense is recognized on a straight-line basis through the end of the lease term including assumed renewals. The difference between the straight-line rent amounts and amounts payable under the leases is recorded as deferred rent. For the years ended December 31, 2017, 2016 and 2015, rent expense was $33.8 million, $29.7 million, and $27.2 million, respectively.

Annual minimum rentals under non-cancelable operating leases are as follows, for the years ended December 31 (in thousands):



Fiscal year
2018	$	34,142
2019		34,725
2020		34,815
2021		34,541
2022		34,706
Thereafter		408,068
Total future maturities payments	$	580,997

Legal proceedings:

The Company was a defendant in a consolidated class action arising in 2013 alleging it failed to disclose certain related party transactions in the Company’s SEC filings and press releases. In January 2017, the plaintiffs and the Company agreed to settle the lawsuit for $9.5 million. The court approved the settlement, and entered an order dismissing the action on June 14, 2017.

The Company also is a nominal defendant in three actions brought derivatively on behalf of the Company by three shareholders in 2015. The plaintiffs allege that the defendant-directors and/or officers breached their fiduciary duties by failing to adopt adequate internal controls for the Company, by approving false and misleading statements issued by the Company, by causing the Company to violate generally accepted accounting principles and SEC regulations, and by permitting the Company’s primary product to contain illegal amounts of lead. The complaints also allege claims for insider trading and/or unjust enrichment. The Company moved to dismiss the actions, or in the alternative, to stay the actions. Those motions have not yet been decided.

By letter dated May 19, 2016, a shareholder of the Company demanded that the Board of Directors investigate alleged breaches of fiduciary duty related to the same matters described above and take action against certain present and former officers and directors of the Company. The Board of Directors has appointed a committee of two independent directors to investigate and evaluate the matters raised in the demand letter, and to recommend to the Company’s Board of Directors what actions, if any, should be taken by the Company with respect to the matters raised in the demand letter.

Based on the Company’s assessment of the derivative actions and demand, the range of resulting loss is not expected to have a material impact on the Company’s financial statements.

The Company is also, from time to time, subject to claims and disputes arising in the normal course of business. In the opinion of management, while the outcome of such claims and disputes cannot be predicted with certainty, the Company’s ultimate liability in connection with these matters is not expected to have a material adverse effect on the results of operations, financial position, or cash flows.

Fair Value of Financial Instruments

12 Months Ended

Dec. 31, 2017

Fair Value of Financial Instruments [Abstract]

Fair Value of Financial Instruments

Note 6: Fair Value of Financial Instruments:

Fair value is the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. To measure fair value, the Company uses a three-tier valuation hierarchy based upon observable and non-observable inputs:

Level 1 – Unadjusted quoted prices that are available in active markets for the identical assets or liabilities at the measurement date.

Level 2 – Significant other observable inputs available at the measurement date, other than quoted prices included in Level 1, either directly or indirectly, including:

Quoted prices for similar assets or liabilities in active markets;

Quoted prices for identical or similar assets or liabilities in non-active markets;

Inputs other than quoted prices that are observable for the asset or liability; and

Inputs that are derived principally from or corroborated by other observable market data.

Level 3 – Significant unobservable inputs that cannot be corroborated by observable market data and reflect the use of significant management judgment.

The following table sets forth by Level within the fair value hierarchy the Company’s financial assets that were accounted for at fair value on a recurring basis at December 31, 2017 and 2016 according to the valuation techniques the Company uses to determine their fair values. There have been no transfers of assets among the fair value hierarchies presented.



	Pricing	Fair Value at
	Category	December 31, 2017		December 31, 2016
Assets		(in thousands)
Cash and cash equivalents	Level 1	$	6,621	$	6,067
Restricted cash	Level 1		855		3,000
Long-term restricted cash	Level 1		-		3,881

The following methods and assumptions were used to estimate the fair value of each class of financial instrument. There have been no changes in the valuation techniques used by the Company to value the Company’s financial instruments.

Cash and cash equivalents: Consists of cash on hand and bank deposits. The value was measured using quoted market prices in active markets. The carrying amount approximates fair value.

Restricted cash: Consists of cash and cash equivalents held in bank deposit accounts restricted as to withdrawal or are under the terms of use for current operations. The value was measured using quoted market prices in active markets. The carrying amount approximates fair value.

Long term restricted cash: Consists of cash and cash equivalents held in bank deposit accounts restricted as to withdrawal and designated for expenditure in the construction of noncurrent assets. The value was measured using quoted market prices in active markets. The carrying amount approximates fair value.

Fair value measurements also apply to certain non-financial assets and liabilities measured at fair value on a nonrecurring basis. Property, plant and equipment is measured at fair value when an impairment is recognized and the related assets are written down to fair value. During the year ended December 31, 2017, the Company identified property, plant and equipment that would be disposed of prior to the end of their useful lives which resulted in the recognition of a $1.1 million charge to write-down these assets to their estimated fair value. The Company measured the fair value of these assets based on projected cash flows and an estimated risk-adjusted rate of return. Projected cash flows are considered level 3 inputs. No impairment charges were recorded during the years ended December 31, 2016 and 2015.

The carrying value of the Company’s borrowings under its credit agreement approximate fair value based upon level 2 inputs of the market interest rates available to the Company for debt obligations with similar risks and maturities.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Related Party Transactions	12 Months Ended
Related Party Transactions	Dec. 31, 2017
Related Party Transactions [Abstract]
Related Party Transactions	Note 7: Related Party Transactions The Company employs Adam Rucker, son of Robert A. Rucker, our interim Chief Executive Officer and President, and a member of our Board of Directors, as a Director of Information Technology. In fiscal year 2017, the Company paid Adam Rucker a total of $120,000, consisting of base salary. In fiscal year 2016, the Company paid Adam Rucker a total of $140,000, consisting of base salary and cash bonus. In fiscal year 2015, the Company paid Adam Rucker a total of $127,000, consisting of base salary and cash bonus. Also in fiscal year 2015, the Company granted stock options to Adam Rucker that had a combined grant date fair value of $44,000. Adam Rucker also received the standard benefits provided to other Company employees during fiscal years 2017, 2016 and 2015.

Earnings Per Share

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Earnings Per Share

Note 8: Earnings Per Share

Basic earnings per share is calculated by dividing net income by the weighted-average number of shares outstanding during the period. Diluted earnings per share is calculated by dividing net income by the weighted-average number of common shares outstanding, after taking into consideration all dilutive potential common shares outstanding during the period.

Basic and diluted net income per share was calculated as follows:



	2017		2016		2015
	(in thousands, except share and per share data)
Net income	$	10,819	$	18,463	$	15,696
Weighted-average shares outstanding - basic		51,700,045		51,418,600		51,161,059
Dilutive common stock equivalents		227,832		461,513		143,923
Weighted-average shares outstanding - diluted		51,927,877		51,880,113		51,304,982
Basic net income per share	$	0.21	$	0.36	$	0.31
Diluted net income per share	$	0.21	$	0.36	$	0.31
Antidilutive Shares		445,490		373,255		568,014

Equity Incentive Plans

12 Months Ended

Dec. 31, 2017

Equity Incentive Plans [Abstract]

Equity Incentive Plans

Note 9: Equity Incentive Plans

2012 Plan:

Under the 2012 Omnibus Award Plan (the “2012 Plan”), 5,000,000 shares of the Company’s common stock are reserved for issuance pursuant to a variety of stock based compensation awards, including stock options, and restricted stock awards.

Stock Options:

During the years ended December 31, 2017, 2016 and 2015, the Company granted stock options to its employees that included service condition requirements. The options provide for certain acceleration of vesting and cancellation of options under different circumstances, such as a change in control, death, disability and termination of service. The Company recognizes compensation expense on a straight-line basis over the requisite service period, net of actual forfeitures.

The fair value of each option grant was estimated on the date of grant using the Black-Scholes option pricing model. The assumptions used in the option valuation models are outlined in the following table:



	2017			2016			2015
Risk-free interest rate	1.89%	–	2.12%	1.15%	–	1.52%	0.90%	–	1.07%
Expected life (in years)	5	–	6	5	–	7		5
Expected volatility	51%	–	55%	52%	–	53%	52%	–	53%
Dividend yield	1%	–	2%	0%	–	0%	0%	–	0%

The computation of the expected volatility assumptions used in the option valuation models was based on historical volatilities of the Company. The Company used the “simplified” method to calculate the expected term of options granted due to the lack of adequate historical data. The risk-free interest rate was based on the U.S. Treasury yield at the time of grant. The expected dividend yield for 2017 was determined using the historical dividend payout and a trailing twelve month closing stock price on the grant date. The expected dividend yield was zero prior to December 31, 2016 based on the fact that, at that time, the Company had not paid dividends prior to December 31, 2016. To the extent that actual outcomes differ from the Company's assumptions, the Company is not required to true up grant-date fair value-based expense to final intrinsic values. The weighted average fair value of stock options granted was $5.88, $7.37, and $5.00 during the years ended December 31, 2017, 2016 and 2015, respectively.

Stock based compensation related to options for the years ended December 31, 2017, 2016 and 2015 was $1.9 million, $3.2 million, and $3.6 million, respectively, and was included in selling, general and administrative expenses in the consolidated statements of operations. As of December 31, 2017, the total future compensation cost related to non-vested options not yet recognized in the consolidated statement of operations was $3.0 million and is expected to be recognized over a weighted-average period of 3.1 years.

The following table summarizes stock option activity:



	Shares	Weighted Average Exercise Price		Weighted Avg Grant Date Fair Value		Weighted Avg Remaining Contractual Term (Years)	Aggregate Intrinsic Value (in thousands)
Balance, January 1, 2015	2,471,000	$	13.27	$	6.45	7.6	$	38
Granted	482,671	$	10.91	$	5.00
Exercised	(69,932)	$	10.00	$	5.17
Cancelled/Forfeited	(258,794)	$	11.81	$	5.61
Balance, December 31, 2015	2,624,945	$	13.07	$	6.30	6.5	$	12,757
Granted	443,500	$	15.43	$	7.37
Exercised	(95,786)	$	10.47	$	5.40
Cancelled/Forfeited	(612,118)	$	12.33	$	5.68
Balance, December 31, 2016	2,360,541	$	13.84	$	6.71	5.7	$	15,971
Granted	305,150	$	13.49	$	5.88
Exercised	(313,372)	$	10.07	$	5.44
Cancelled/Forfeited	(619,755)	$	13.04	$	6.29
Balance, December 31, 2017	1,732,564	$	14.74	$	6.95	4.5	$	365
Exercisable at December 31, 2017	1,114,835	$	15.98	$	7.65	3.5
Vested and expected to vest, December 31, 2017	2,032,314	$	14.04	$	6.59	4.5	$	365

The aggregate intrinsic value is the difference between the exercise price and the closing price of the Company’s stock on December 31. The intrinsic value of the stock options exercised during 2017 and 2016 was $4.4 million and $0.9 million, respectively.

Options outstanding as of December 31, 2017 are as follows:



Range of Exercise Price				Weighted Average
			Options	Exercise Price		Remaining Contractual Life-Years
$5.00	to	$10.00	652,411	$	9.22	5.30
$10.01	to	$15.00	509,478	$	12.32	3.81
$15.01	to	$20.00	244,875	$	17.87	5.75
$20.01	to	$25.00	87,800	$	22.39	6.71
$25.01	to	$30.00	238,000	$	29.02	1.73

Restricted Stock:

The Company awards restricted common shares to selected employees and non-employee directors. Recipients are not required to provide any consideration other than continued services. Restricted share awards are subject to certain restrictions on transfer, and all or part of the shares awarded may be subject to forfeiture upon the occurrence of certain events, including employment termination. Certain awards are also subject to forfeiture if the Company fails to attain its Adjusted EBITDA targets. The restricted common shares are valued at the grant date fair value and expensed over the requisite service period or the vesting term of the awards. The Company adjusts the cumulative expense recognized on awards with performance conditions based on the probability of achieving the performance condition.

The following table summarizes restricted stock activity:



	Shares	Weighted Avg Grant Date Fair Value
Nonvested, December 31, 2014	189,235	$	14.67
Granted	54,036	$	12.45
Vested	(164,235)	$	12.50
Forfeited	-	$	-
Nonvested, December 31, 2015	79,036	$	17.67
Granted	73,384	$	17.60
Vested	(66,536)	$	15.55
Forfeited	-	$	-
Nonvested, December 31, 2016	85,884	$	19.25
Granted	324,184	$	13.55
Vested	(47,051)	$	19.93
Forfeited	(87,849)	$	17.71
Nonvested, December 31, 2017	275,168	$	13.03

The total expense associated with restricted stock for the years ended December 31, 2017, 2016, and 2015 was $1.2 million, $1.1 million, and $1.9 million, respectively. As of December 31, 2017, there was $2.9 million of total unrecognized expense related to unvested restricted stock awards, which are expected to vest, and will be expensed over a weighted-average period of 3.3 years. The fair value of restricted stock granted in fiscal year 2017 was $4.4 million. The total fair value of restricted stock that vested during the year ended December 31, 2016 was $1.3 million. Using the closing stock price of $9.60 on December 31, 2017, the number of restricted shares outstanding and expected to vest was 269,768, with an intrinsic value of $2.6 million.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Income Taxes

12 Months Ended

Dec. 31, 2017

Income Taxes [Abstract]

Income Taxes

Note 10: Income Taxes

The components of the provision for income taxes consist of the following:



	Years Ended December 31,
	2017		2016		2015
	(in thousands)
Current
Federal	$	2,721	$	10,831	$	3,691
State		872		2,560		1,886
International		30		30		-
Total Current		3,623		13,421		5,577
Deferred
Federal		9,354		(363)		5,252
State		363		(182)		247
Total Deferred		9,717		(545)		5,499
Total Provision for Income Taxes	$	13,340	$	12,876	$	11,076

A majority of all of the Company's income is from domestic operations.

On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (the “Tax Act”) was enacted into law and the new legislation contains several key tax provisions that affected the Company, including, but not limited to, a reduction of the corporate income tax rate to 21% effective January 1, 2018 and a one-time mandatory transition tax on accumulated foreign earnings. The Company is required to recognize the effect of the tax law changes in the period of enactment, including determining the transition tax, re-measuring the Company’s U.S. deferred tax assets and liabilities and reassessing the net realizability of the Company’s deferred tax assets and liabilities. Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 118”) allows the Company to record provisional amounts during a measurement period not to extend beyond one year of the enactment date. Since the Tax Act was passed late in the fourth quarter of 2017, and ongoing guidance and accounting interpretation is expected over the next 12 months, the Company considers the accounting of the transition tax, deferred tax re-measurements, and other items to be provisional due to the forthcoming guidance and the Company’s ongoing analysis of final year-end data and tax positions. The Company expects to complete its analysis within the measurement period in accordance with SAB 118.

The following table reflects the effective income tax rate reconciliation for the years ended December 31, 2017, 2016 and 2015:



	2017		2016		2015
Federal statutory rate	35.0	%	35.0	%	35.0	%
Tax reform(1)	18.9		-		-
State income taxes, net of the federal tax benefit	4.1		4.4		4.4
Stock based compensation	(2.0)		1.6		1.4
Other	(0.8)		0.1		0.6
Effective tax rate	55.2	%	41.1	%	41.4	%

⁽¹⁾

Due to the Tax Act, the Company re-measured its U.S. deferred tax assets as of December 31, 2017 from 35% to 21%, resulting in $4.6 million of income tax expense.

Components of net deferred income taxes are as follows at December 31:



	2017		2016
	(in thousands)
Deferred income tax assets:
Section 743 carryforward	$	16,508	$	27,251
Leasehold improvement reimbursements		3,642		5,299
Inventory		1,229		1,707
Deferred rent		5,456		6,794
Stock based compensation		2,016		3,112
Other		206		3,064
Total deferred income tax assets	$	29,057	$	47,227

Deferred income tax liabilities
Depreciation		17,403		25,836
Total deferred income tax liabilities		17,403		25,836
Net deferred income tax assets	$	11,654	$	21,391

The Company has not recorded United States deferred income taxes on approximately $0.7 million of its non-U.S. subsidiaries' undistributed earnings because such amounts are intended to be reinvested outside the United States indefinitely. The transition tax noted above will result in including the previously untaxed foreign earnings in the Company’s 2017 federal and state taxable income. If these earnings were repatriated to the United States, the Company would be required to accrue and pay local country withholding taxes and potential United States state taxes. The additional tax obligation associated with the repatriation of earnings generated outside of the United States would not have a material impact on the Company’s financial statements. As part of its ongoing analysis on the impacts of the Tax Act, the Company continues to analyze its potential tax liabilities.

The Company records interest and penalties through income tax relating to uncertain tax positions. As of December 31, 2017, 2016 and 2015, the Company has not recognized any liabilities for uncertain tax positions nor has the Company accrued interest and penalties related to uncertain tax positions.

The Company's federal income tax returns for fiscal years 2015 through 2016 tax years are still subject to examination in the U.S. Various state and foreign jurisdiction tax years remain open to examination. The Company believes that any potential assessment would be immaterial to its financial statements.

New Market Tax Credit	12 Months Ended
New Market Tax Credit	Dec. 31, 2017
New Market Tax Credit [Abstract]
New Market Tax Credit	Note 11: New Market Tax Credit 2016 New Market Tax Credit In December 2016, the Company entered into a financing transaction with U.S. Bank Community, LLC (“U.S. Bank”) related to a $9.2 million expansion of the Company’s facility in Durant, Oklahoma. U.S. Bank made a capital contribution to, and Tile Shop Lending, Inc. (“Tile Shop Lending”) made a loan to, Twain Investment Fund 192 LLC (the “Investment Fund”) under a qualified New Markets Tax Credit (“NMTC”) program. The NMTC program was provided for in the Community Renewal Tax Relief Act of 2000 (the “Act”) and is intended to induce capital investment in qualified lower income communities. The Act permits taxpayers to claim credits against their Federal income taxes for up to 39% of qualified investments in the equity of community development entities (“CDEs”). CDEs are privately managed investment institutions that are certified to make qualified low-income community investments. In this transaction, Tile Shop Lending loaned $6.7 million to the Investment Fund at an interest rate of 1.37% per year and with a maturity date of December 31, 2046. The Investment Fund then contributed the loan to a CDE, which, in turn, loaned the funds on similar terms to Tile Shop of Oklahoma, LLC, an indirect, wholly-owned subsidiary of Holdings. The proceeds of the loans from the CDEs (including loans representing the capital contribution made by U.S. Bank, net of syndication fees) were used to partially fund the distribution center project. In December 2016, U.S. Bank also contributed $3.1 million to the Investment Funds and, by virtue of such contribution, is entitled to substantially all of the tax benefits derived from the NMTCs, while the Company effectively received net loan proceeds equal to U.S. Bank’s contributions to the Investment Fund. This transaction includes a put/call provision whereby the Company may be obligated or entitled to repurchase U.S. Bank’s interest. The Company believes that U.S. Bank will exercise the put option in December 2023 at the end of the recapture period. The value attributed to the put/call is de minimis. The NMTC is subject to 100% recapture for a period of seven years as provided in the Internal Revenue Code. The Company is required to be in compliance with various regulations and contractual provisions that apply to the NMTC arrangement. Non-compliance with applicable requirements could result in projected tax benefits not being realized and, therefore, could require the Company to indemnify U.S. Bank for any loss or recapture of NMTCs related to the financing until such time as the obligation to deliver tax benefits is relieved. The Company does not anticipate any credit recaptures will be required in connection with this arrangement. The Company has determined that the financing arrangement with the Investment Fund and CDEs contains a variable interest entity (“VIE”). The ongoing activities of the Investment Fund – collecting and remitting interest and fees and NMTC compliance – were all considered in the initial design and are not expected to significantly affect economic performance throughout the life of the Investment Fund. Management considered the contractual arrangements that obligate the Company to deliver tax benefits and provide various other guarantees to the structure; U.S. Bank’s lack of a material interest in the underling economics of the project; and the fact that the Company is obligated to absorb losses of the Investment Fund. The Company concluded that it is the primary beneficiary of the VIE and consolidated the Investment Fund, as a VIE, in accordance with the accounting standards for consolidation. In 2016, U.S. Bank’s contributions of $3.1 million, net of syndications fees, were included in cash, restricted cash, other accrued liabilities and other long-term liabilities in the consolidated balance sheet. The Company incurred $1.2 million of syndication fees in connection with this transaction, which were classified as other current assets and other non-current assets in the consolidated balance sheet. The Company is recognizing the benefit of this net $1.9 million contribution over the seven-year compliance period as it is being earned through the on-going compliance with the conditions of the NMTC program. As of December 31, 2017, the balance of the contribution liability was $2.7 million, of which $0.4 million is classified as other accrued liabilities on the consolidated balance sheet and $2.3 million is classified as other long-term liabilities on the consolidated balance sheet. The Company is able to request reimbursement for certain expenditures made in connection with the expansion of the distribution center in Durant, Oklahoma from the Investment Fund. Expenditures that qualify for reimbursement include building costs, equipment purchases, and other expenditures tied to the expansion of the facility. During the fiscal year ended December 31, 2017, the Company received reimbursements totaling $6.0 million from the investment fund. As of December 31, 2017, the balance in the Investment Fund available for reimbursement to the Company was $0.9 million. 2013 New Market Tax Credit In July 2013, the Company entered into a financing transaction with U.S. Bank and Chase Community Equity (“Chase”, and collectively with US. Bank, the “investors”) related to a $19.1 million acquisition, rehabilitation, and construction of the Company’s distribution center and manufacturing facilities in Durant, Oklahoma. In this transaction, Tile Shop Lending loaned $13.5 million to the Tile Shop Investment Fund LLC. The investors contributed $5.6 million to the Tile Shop Investment Fund LLC. The investors are entitled to the tax benefits derived from the NMTC by virtue of their contribution while the Company received the proceeds, net of syndication fees, to apply toward the construction project. This transaction includes a put/call provision whereby the Company may be obligated or entitled to repurchase the investors’ interest. The Company believes that the investors will exercise the put option in September 2020 at the end of the recapture period. The value attributed to the put/call is de minimis. The NMTC is subject to 100% recapture for a period of seven years as provided in the Internal Revenue Code. The Company is required to be in compliance with various regulations and contractual provisions that apply to the NMTC arrangement. Non-compliance with applicable requirements could result in projected tax benefits not being realized and, therefore, could require the Company to indemnify the investors for any loss or recapture of NMTCs related to the financing until such time as the obligation to deliver tax benefits is relieved. The Company does not anticipate any credit recaptures will be required in connection with this arrangement. The Company determined that this financing arrangement contains a VIE. The ongoing activities of the Tile Shop Investment Fund LLC – collecting and remitting interest and fees and NMTC compliance – were all considered in the initial design and are not expected to significantly affect economic performance throughout the life of the Tile Shop Investment Fund LLC. Management considered the contractual arrangements that obligate the Company to deliver tax benefits and provide various other guarantees to the structure; the investors lack of a material interest in the underling economics of the project; and the fact that the Company is obligated to absorb losses of the Investment Fund. The Company concluded that it is the primary beneficiary of the VIE and consolidated the Tile Shop Investment Fund LLC, as a VIE, in accordance with the accounting standards for consolidation. In 2013, the investors’ contributions, of $5.6 million, net of syndication fees, were included in cash, restricted cash, other accrued liabilities and other long-term liabilities in the consolidated balance sheet. The Company incurred $1.2 million of syndication fees in connection with this transaction which were classified as other current assets and other non-current assets in the consolidated balance sheet. The Company is recognizing the benefit of this net $4.4 million contribution over the seven-year compliance period as it is being earned through the on-going compliance with the conditions of the NMTC program. As of December 31, 2017, the balance of the contribution liability was $1.7 million, of which $0.7 million is classified as other accrued liabilities on the consolidated balance sheet and $1.0 million is classified as other long-term liabilities on the consolidated balance sheet.

Retirement Savings Plan	12 Months Ended
Retirement Savings Plan	Dec. 31, 2017
Retirement Savings Plan [Abstract]
Retirement Savings Plan	Note 12: Retirement Savings Plan The Company has a 401(k) profit sharing plan covering substantially all full-time employees. Employee contributions are limited to the maximum amount allowable by the Internal Revenue Code. The Company matched $1.4 million, $0.5 million, and $0.4 million of employee contributions in 2017, 2016, and 2015 and made no discretionary contributions for any of the years presented.

Quarterly Financial Data

12 Months Ended

Dec. 31, 2017

Quarterly Financial Data [Abstract]

Quarterly Financial Data

Note 13: Quarterly Financial Data (Unaudited)

Quarterly results of operations for the years ended December 31, 2017 and 2016 are summarized below (in thousands, except per share amounts):



	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(in thousands)
2017
Net sales	$	92,135	$	89,464	$	84,421	$	78,580
Gross profit		64,745		62,348		56,662		52,467
Income (loss) from operations		13,533		11,600		4,377		(3,664)
Net income (loss)		8,009		7,723		2,438		(7,351)
Basic earnings (loss) per share		0.16		0.15		0.05		(0.14)
Diluted earnings (loss) per share		0.15		0.15		0.05		(0.14)

2016
Net sales	$	84,714	$	84,270	$	78,559	$	76,614
Gross profit		59,705		58,699		55,159		53,333
Income from operations		11,756		11,709		7,798		1,650
Net income		6,758		6,849		4,583		273
Basic earnings per share		0.13		0.13		0.09		0.01
Diluted earnings per share		0.13		0.13		0.09		0.01

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2017

Summary of Significant Accounting Policies [Abstract]

Nature of Business

Basis of Presentation

Use of Estimates

Cash and Cash Equivalents

Restricted Cash

Trade Receivables

Inventories



	2017		2016
	(in thousands)
Finished goods	$	65,843	$	61,949
Raw materials		1,660		2,312
Finished goods in transit		17,756		10,034
Total	$	85,259	$	74,295

Income Taxes

Revenue Recognition

Sales Return Reserve



	2017		2016		2015
	(in thousands)
Balance at beginning of year	$	3,080	$	2,781	$	3,292
Additions to sales return reserve		30,177		31,334		26,522
Deductions from sales return reserve		(30,118)		(31,035)		(27,033)
Balance at end of year	$	3,139	$	3,080	$	2,781

Cost of Sales and Selling, General and Administrative Expenses

The primary costs classified in each major expense category are:

Cost of Sales

Materials cost;

Shipping and transportation expenses to bring products into the Company's distribution centers;

Custom and duty expenses;

Customer shipping and handling expenses;

Physical inventory losses;

Costs incurred at distribution centers in connection with the receiving process; and

Labor and overhead costs incurred to manufacture inventory

Selling, General & Administrative Expenses

All compensation costs for retail, corporate and distribution employees;

Occupancy, utilities and maintenance costs of retail and corporate facilities;

Shipping and transportation expenses to move inventory from the Company's distribution centers to the Company's stores;

Depreciation and amortization; and

Advertising costs

Stock Based Compensation

Concentration of Risk

Segments

Advertising Costs

Pre-opening Costs

Property, Plant and Equipment



	Asset life (in years)
Buildings and building improvements		40
Leasehold improvements	8	–	26
Furniture and fixtures	2	–	7
Machinery and equipment	5	–	10
Computer equipment and software	3	–	7
Vehicles		5

Internal Use Software

Leases

Self-Insurance

New Accounting Pronouncements

Recently Adopted Accounting Pronouncements

Accounting Pronouncements Not Yet Adopted

Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Summary of Significant Accounting Policies [Abstract]

Schedule of Inventories



	2017		2016
	(in thousands)
Finished goods	$	65,843	$	61,949
Raw materials		1,660		2,312
Finished goods in transit		17,756		10,034
Total	$	85,259	$	74,295

Summary of Activity in Sales Returns Reserve



	2017		2016		2015
	(in thousands)
Balance at beginning of year	$	3,080	$	2,781	$	3,292
Additions to sales return reserve		30,177		31,334		26,522
Deductions from sales return reserve		(30,118)		(31,035)		(27,033)
Balance at end of year	$	3,139	$	3,080	$	2,781

Summary of Estimated Useful Lives of Property, Plant and Equipment



	Asset life (in years)
Buildings and building improvements		40
Leasehold improvements	8	–	26
Furniture and fixtures	2	–	7
Machinery and equipment	5	–	10
Computer equipment and software	3	–	7
Vehicles		5

Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Summary of Property, Plant and Equipment



	2017		2016
	(in thousands)
Land	$	904	$	904
Building and building improvements		25,417		21,916
Leasehold improvements		84,677		77,404
Furniture and fixtures		129,876		119,589
Machinery and equipment		28,561		26,433
Computer equipment and software		29,851		24,002
Vehicles		3,463		3,136
Construction in progress		6,124		3,543
Total property, plant and equipment		308,873		276,927
Less accumulated depreciation		(157,468)		(135,890)
Total property, plant and equipment, net	$	151,405	$	141,037

Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Accrued Liabilities [Abstract]

Schedule of Accrued Liabilities



	2017		2016
	(in thousands)
Shareholder litigation accrual	$	-	$	9,500
Customer deposits		8,064		7,742
Accrued wages and salaries		2,853		4,962
Sales return reserve		3,139		3,080
Payroll and sales taxes		2,491		2,691
Other current liabilities		5,866		5,486
Total accrued liabilities	$	22,413	$	33,461

Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Long-term Debt [Abstract]

Schedule of Long-Term Debt



	2017				2016
			Unamortized				Unamortized
			Debt Issuance				Debt Issuance
	Principal		Costs		Principal		Costs
	(in thousands)
Term note payable - interest at 3.06% and 2.27% at December 31, 2017 and 2016	$	11,346	$	(36)	$	17,721	$	(114)
Commercial bank credit facility		15,000		-		10,000		-
Variable interest rate bonds (1.69% and 0.89% at December 31, 2017 and 2016), which mature April 1, 2023, collateralized by buildings and equipment		705		-		805		-
Total debt obligations		27,051		(36)		28,526		(114)
Less: current portion		8,855		(22)		6,350		(64)
Debt obligations, net of current portion	$	18,196	$	(14)	$	22,176	$	(50)

Summary of Annual Aggregate Maturities of Debts, Net of Debt Issuance Costs



Fiscal year
2018	$	8,855
2019		2,706
2020		15,115
2021		120
2022		125
Thereafter		130
Total future maturities payments	$	27,051
Less: debt issuance costs		36
Total future maturities payments, net of debt issuance costs	$	27,015

Summary of Quarterly Term Loan Principal Payments



Period
March 31, 2018 to June 30, 2018			1,875
September 30, 2018 to March 31, 2020			2,500

Summary of Minimum Lease Payments Under Capital Lease Obligations



Fiscal year
2018	$	215
2019		216
2020		216
2021		215
2022		90
Thereafter		-
Less: amounts representing interest		(255)
Present value of future minimum lease payments		697
Less: current portion		121
Capital lease obligations, net of current portion	$	576

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(e),(f))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21538-112644

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644

+ Details

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies [Abstract]

Schedule of Annual Minimum Rentals Under Non-Cancelable Operating Leases



Fiscal year
2018	$	34,142
2019		34,725
2020		34,815
2021		34,541
2022		34,706
Thereafter		408,068
Total future maturities payments	$	580,997

Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2017

Fair Value of Financial Instruments [Abstract]

Summary of Fair Value of Financial Assets Measured on a Recurring Basis



	Pricing	Fair Value at
	Category	December 31, 2017		December 31, 2016
Assets		(in thousands)
Cash and cash equivalents	Level 1	$	6,621	$	6,067
Restricted cash	Level 1		855		3,000
Long-term restricted cash	Level 1		-		3,881

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share



	2017		2016		2015
	(in thousands, except share and per share data)
Net income	$	10,819	$	18,463	$	15,696
Weighted-average shares outstanding - basic		51,700,045		51,418,600		51,161,059
Dilutive common stock equivalents		227,832		461,513		143,923
Weighted-average shares outstanding - diluted		51,927,877		51,880,113		51,304,982
Basic net income per share	$	0.21	$	0.36	$	0.31
Diluted net income per share	$	0.21	$	0.36	$	0.31
Antidilutive Shares		445,490		373,255		568,014

Equity Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2017

Equity Incentive Plans [Abstract]

Summary of Assumptions Used in Option Valuation



	2017			2016			2015
Risk-free interest rate	1.89%	–	2.12%	1.15%	–	1.52%	0.90%	–	1.07%
Expected life (in years)	5	–	6	5	–	7		5
Expected volatility	51%	–	55%	52%	–	53%	52%	–	53%
Dividend yield	1%	–	2%	0%	–	0%	0%	–	0%

Summary of Stock Option Activity



	Shares	Weighted Average Exercise Price		Weighted Avg Grant Date Fair Value		Weighted Avg Remaining Contractual Term (Years)	Aggregate Intrinsic Value (in thousands)
Balance, January 1, 2015	2,471,000	$	13.27	$	6.45	7.6	$	38
Granted	482,671	$	10.91	$	5.00
Exercised	(69,932)	$	10.00	$	5.17
Cancelled/Forfeited	(258,794)	$	11.81	$	5.61
Balance, December 31, 2015	2,624,945	$	13.07	$	6.30	6.5	$	12,757
Granted	443,500	$	15.43	$	7.37
Exercised	(95,786)	$	10.47	$	5.40
Cancelled/Forfeited	(612,118)	$	12.33	$	5.68
Balance, December 31, 2016	2,360,541	$	13.84	$	6.71	5.7	$	15,971
Granted	305,150	$	13.49	$	5.88
Exercised	(313,372)	$	10.07	$	5.44
Cancelled/Forfeited	(619,755)	$	13.04	$	6.29
Balance, December 31, 2017	1,732,564	$	14.74	$	6.95	4.5	$	365
Exercisable at December 31, 2017	1,114,835	$	15.98	$	7.65	3.5
Vested and expected to vest, December 31, 2017	2,032,314	$	14.04	$	6.59	4.5	$	365

Summary of Stock Options Outstanding



Range of Exercise Price				Weighted Average
			Options	Exercise Price		Remaining Contractual Life-Years
$5.00	to	$10.00	652,411	$	9.22	5.30
$10.01	to	$15.00	509,478	$	12.32	3.81
$15.01	to	$20.00	244,875	$	17.87	5.75
$20.01	to	$25.00	87,800	$	22.39	6.71
$25.01	to	$30.00	238,000	$	29.02	1.73

Summary of Restricted Stock Activity



	Shares	Weighted Avg Grant Date Fair Value
Nonvested, December 31, 2014	189,235	$	14.67
Granted	54,036	$	12.45
Vested	(164,235)	$	12.50
Forfeited	-	$	-
Nonvested, December 31, 2015	79,036	$	17.67
Granted	73,384	$	17.60
Vested	(66,536)	$	15.55
Forfeited	-	$	-
Nonvested, December 31, 2016	85,884	$	19.25
Granted	324,184	$	13.55
Vested	(47,051)	$	19.93
Forfeited	(87,849)	$	17.71
Nonvested, December 31, 2017	275,168	$	13.03

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2017

Income Taxes [Abstract]

Schedule of Components of Provision for Income Taxes



	Years Ended December 31,
	2017		2016		2015
	(in thousands)
Current
Federal	$	2,721	$	10,831	$	3,691
State		872		2,560		1,886
International		30		30		-
Total Current		3,623		13,421		5,577
Deferred
Federal		9,354		(363)		5,252
State		363		(182)		247
Total Deferred		9,717		(545)		5,499
Total Provision for Income Taxes	$	13,340	$	12,876	$	11,076

Schedule of Effective Income Tax Rate Reconciliation



	2017		2016		2015
Federal statutory rate	35.0	%	35.0	%	35.0	%
Tax reform(1)	18.9		-		-
State income taxes, net of the federal tax benefit	4.1		4.4		4.4
Stock based compensation	(2.0)		1.6		1.4
Other	(0.8)		0.1		0.6
Effective tax rate	55.2	%	41.1	%	41.4	%

Schedule of Components of Net Deferred Income Taxes



	2017		2016
	(in thousands)
Deferred income tax assets:
Section 743 carryforward	$	16,508	$	27,251
Leasehold improvement reimbursements		3,642		5,299
Inventory		1,229		1,707
Deferred rent		5,456		6,794
Stock based compensation		2,016		3,112
Other		206		3,064
Total deferred income tax assets	$	29,057	$	47,227

Deferred income tax liabilities
Depreciation		17,403		25,836
Total deferred income tax liabilities		17,403		25,836
Net deferred income tax assets	$	11,654	$	21,391

Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Data [Abstract]

Schedule of Quarterly Results of Operations



	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(in thousands)
2017
Net sales	$	92,135	$	89,464	$	84,421	$	78,580
Gross profit		64,745		62,348		56,662		52,467
Income (loss) from operations		13,533		11,600		4,377		(3,664)
Net income (loss)		8,009		7,723		2,438		(7,351)
Basic earnings (loss) per share		0.16		0.15		0.05		(0.14)
Diluted earnings (loss) per share		0.15		0.15		0.05		(0.14)

2016
Net sales	$	84,714	$	84,270	$	78,559	$	76,614
Gross profit		59,705		58,699		55,159		53,333
Income from operations		11,756		11,709		7,798		1,650
Net income		6,758		6,849		4,583		273
Basic earnings per share		0.13		0.13		0.09		0.01
Diluted earnings per share		0.13		0.13		0.09		0.01

Summary of Significant Accounting Policies (Narrative) (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) ft² state store	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Summary Of Significant Accunting Policies [Line Items]
Number of stores \| store	138
Number of states in which entity operates \| state	31
Cash and cash equivalents	$ 6,621,000	$ 6,067,000	$ 10,330,000	$ 5,759,000
Due from banks	3,100,000	3,000,000
Allowance for doubtful accounts	100,000	100,000
Inventory, provision for shrinkage and other	200,000	200,000
Liability for uncertain tax positions	0	0
Income tax interest and penalties related to uncertain tax positions	0	0
Advertising costs	9,500,000	6,900,000	6,500,000
Pre-opening costs	1,700,000	900,000	500,000
Asset impairment charges	1,072,000	0	0
Capitalized software	200,000	400,000
Capitalized software, depreciation expense	200,000	500,000	$ 500,000
Self-insurance liability, current	300,000	700,000
Workers' compensation liability, current	1,300,000	1,200,000
Restricted cash	$ 900,000
Supplier Concentration Risk [Member]
Summary Of Significant Accunting Policies [Line Items]
Concentration risk percentage	18.00%
Workers' Compensation Standby Letters Of Credit [Member]
Summary Of Significant Accunting Policies [Line Items]
Line of credit outstanding	$ 1,100,000	$ 1,100,000
Average [Member]
Summary Of Significant Accunting Policies [Line Items]
Area of store \| ft²	20,300
Minimum [Member]
Summary Of Significant Accunting Policies [Line Items]
Capitalized software, estimated useful life	3 years
Maximum [Member]
Summary Of Significant Accunting Policies [Line Items]
Capitalized software, estimated useful life	5 years

Summary of Significant Accounting Policies (Schedule of Inventories) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Summary of Significant Accounting Policies [Abstract]
Finished goods	$ 65,843	$ 61,949
Raw materials	1,660	2,312
Finished goods in transit	17,756	10,034
Total	$ 85,259	$ 74,295

Summary of Significant Accounting Policies (Summary of Activity In Sales Returns Reserve) (Details) - Sales Returns Reserve [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of year	$ 3,080	$ 2,781	$ 3,292
Additions to sales return reserve	30,177	31,334	26,522
Deductions from sales return reserve	(30,118)	(31,035)	(27,033)
Balance at end of year	$ 3,139	$ 3,080	$ 2,781

Summary of Significant Accounting Policies (Summary of Estimated Useful Lives of Property, Plant and Equipment) (Details)	12 Months Ended
	Dec. 31, 2017
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	40 years
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	5 years
Minimum [Member] \| Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	8 years
Minimum [Member] \| Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	2 years
Minimum [Member] \| Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	5 years
Minimum [Member] \| Computer Equipment And Software [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	3 years
Maximum [Member] \| Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	26 years
Maximum [Member] \| Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	7 years
Maximum [Member] \| Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	10 years
Maximum [Member] \| Computer Equipment And Software [Member]
Property, Plant and Equipment [Line Items]
Asset life (in years)	7 years

Property, Plant and Equipment (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Abstract]
Depreciation & amortization	$ 26,239,000	$ 23,042,000	$ 22,236,000
Asset impairment charges	$ 1,072,000	$ 0	$ 0

Property, Plant and Equipment (Summary of Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 308,873	$ 276,927
Less accumulated depreciation	(157,468)	(135,890)
Total property, plant and equipment, net	151,405	141,037
Land [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	904	904
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	25,417	21,916
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	84,677	77,404
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	129,876	119,589
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	28,561	26,433
Computer Equipment And Software [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	29,851	24,002
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	3,463	3,136
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Total property, plant and equipment	$ 6,124	$ 3,543

Accrued Liabilities (Schedule of Accrued Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Accrued Liabilities [Abstract]
Shareholder litigation accrual		$ 9,500
Customer deposits	$ 8,064	7,742
Accrued wages and salaries	2,853	4,962
Sales return reserve	3,139	3,080
Payroll and sales taxes	2,491	2,691
Other current liabilities	5,866	5,486
Total other accrued liabilities	$ 22,413	$ 33,461

Long-term Debt (Narrative) (Details) $ in Millions		12 Months Ended
Long-term Debt (Narrative) (Details) $ in Millions	Jul. 17, 2017	Dec. 31, 2017 USD ($) store	Dec. 31, 2016
Debt Instrument [Line Items]
Number of capital leases \| store		1
Term Loan [Member]
Debt Instrument [Line Items]
Credit facility effective interest rate		3.06%	2.27%
Credit Agreement [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 125.0
Credit Agreement [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Credit facility effective interest rate		3.06%
Credit Agreement [Member] \| Federal Funds Rate [Member]
Debt Instrument [Line Items]
Credit facility, spread on variable interest rate		0.50%
Credit Agreement [Member] \| Eurodollar [Member]
Debt Instrument [Line Items]
Credit facility, spread on variable interest rate		1.00%
Credit Agreement [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Credit facility effective interest rate		5.00%
Credit Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Credit facility, interest rate based on leverage ratio		0.50%
Credit Agreement [Member] \| Minimum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Credit facility, spread on variable interest rate		1.50%
Credit Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Credit facility, interest rate based on leverage ratio		1.00%
Credit Agreement [Member] \| Maximum [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Credit facility, spread on variable interest rate		2.00%
Credit Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 75.0
Line of credit outstanding		15.0
Credit facility, available borrowing capacity		60.0
Credit Agreement [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 50.0
Credit facility term		5 years
Loan payable		$ 11.3
Credit Agreement, Third Amendment [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, fixed charge coverage ratio	150.00%
Credit Agreement, Third Amendment [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, fixed charge coverage ratio	200.00%

Long-term Debt (Schedule of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Principal, Total debt obligations	$ 27,051	$ 28,526
Unamortized Debt Issuance Costs, Total debt obligations	(36)	(114)
Principal, Less: current portion	8,855	6,350
Unamortized Debt Issuance Costs, Less: current portion	(22)	(64)
Principal, Debt obligations, net of current poriton	18,196	22,176
Unamortized Debt Issuance Costs, Debt obligations, net of current portion	(14)	(50)
Term Loan [Member]
Debt Instrument [Line Items]
Principal, Total debt obligations	11,346	17,721
Unamortized Debt Issuance Costs, Total debt obligations	$ (36)	$ (114)
Effective interest rate	3.06%	2.27%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal, Total debt obligations	$ 15,000	$ 10,000
Variable Rate Debt [Member]
Debt Instrument [Line Items]
Principal, Total debt obligations	$ 705	$ 805
Effective interest rate	1.69%	0.89%

Long-term Debt (Summary of Annual Aggregate Maturities of Debts, Net of Debt Issuance Costs) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Long-term Debt [Abstract]
2018	$ 8,855
2019	2,706
2020	15,115
2021	120
2022	125
Thereafter	130
Principal, Total debt obligations	27,051	$ 28,526
Less: debt issuance costs	36	$ 114
Total future maturities payments, net of debt issuance costs	$ 27,015

Long-Term Debt (Summary of Quarterly Term Loan Principal Payments) (Details) - Credit Agreement [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)
March 31, 2018 to June 30, 2018 [Member]
Debt Instrument [Line Items]
Quarterly principal payments	$ 1,875
September 30, 2018 to March 31, 2020 [Member]
Debt Instrument [Line Items]
Quarterly principal payments	$ 2,500

Long-Term Debt (Summary of Minimum Lease Payments Under Capital Lease Obligations) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Long-term Debt [Abstract]
2018	$ 215
2019	216
2020	216
2021	215
2022	90
Less: amounts representing interest	(255)
Present value of future minimum lease payments	697
Less: current portion	121
Capital lease obligations, net of current portion	$ 576	$ 697

Commitments and Contingencies (Narrative) (Details) $ in Millions	1 Months Ended	12 Months Ended
	Jan. 31, 2017 USD ($)	Dec. 31, 2017 USD ($) lawsuit plaintiff item	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Loss Contingencies [Line Items]
Rent expense		$ 33.8	$ 29.7	$ 27.2
Related Party Transactions Class Action [Member]
Loss Contingencies [Line Items]
Settlement amount	$ 9.5
Tile Shop Holdings, Inc. Stockholder Derivative Litigation [Member]
Loss Contingencies [Line Items]
Number of actions \| lawsuit		3
Number of plaintiffs \| plaintiff		3
Number of committee members \| item		2

Commitments and Contingencies (Schedule of Annual Minimum Rentals Under Non-Cancelable Operating Leases) (Details) $ in Thousands	Dec. 31, 2017 USD ($)
Commitments and Contingencies [Abstract]
2018	$ 34,142
2019	34,725
2020	34,815
2021	34,541
2022	34,706
Thereafter	408,068
Total future maturities payments	$ 580,997

Fair Value of Financial Instruments (Summary of Fair Value of Financial Assets Measured on a Recurring Basis) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted cash	$ 855	$ 3,000
Long-term restricted cash		3,881
Level 1 [Member] \| Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	6,621	6,067
Restricted cash	$ 855	3,000
Long-term restricted cash		$ 3,881

Related Party Transactions (Narrative) (Details) - Director Of Information Technology [Member] - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Grant date fair value of options			$ 44,000
Base Salary [Member]
Related Party Transaction [Line Items]
Amount of related party transaction	$ 120,000
Base Salary And Cash Bonus [Member]
Related Party Transaction [Line Items]
Amount of related party transaction		$ 140,000	$ 127,000

Earnings Per Share (Schedule of Earnings Per Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Earnings Per Share [Abstract]
Net income	$ (7,351)	$ 2,438	$ 7,723	$ 8,009	$ 273	$ 4,583	$ 6,849	$ 6,758	$ 10,819	$ 18,463	$ 15,696
Weighted-average shares outstanding - basic									51,700,045	51,418,600	51,161,059
Dilutive common stock equivalents									227,832	461,513	143,923
Weighted-average shares outstanding - diluted									51,927,877	51,880,113	51,304,982
Basic net income per share	$ (0.14)	$ 0.05	$ 0.15	$ 0.16	$ 0.01	$ 0.09	$ 0.13	$ 0.13	$ 0.21	$ 0.36	$ 0.31
Diluted net income per share	$ (0.14)	$ 0.05	$ 0.15	$ 0.15	$ 0.01	$ 0.09	$ 0.13	$ 0.13	$ 0.21	$ 0.36	$ 0.31
Antidilutive Shares									445,490	373,255	568,014

Equity Incentive Plans (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2012
Plan 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for issuance				5,000,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of options granted	$ 5.88	$ 7.37	$ 5.00
Stock-based compensation expense	$ 1.9	$ 3.2	$ 3.6
Compensation cost not yet recognized	$ 3.0
Compensation cost not yet recognized, weighted average period for recognition	3 years 1 month 6 days
Intrinsic value of options exercised	$ 4.4	0.9
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1.2	1.1	$ 1.9
Compensation cost not yet recognized	$ 2.9
Compensation cost not yet recognized, weighted average period for recognition	3 years 3 months 18 days
Total fair value of shares vested		$ 1.3
Fair value of restricted stock granted	$ 4.4
Share price	$ 9.60
Restricted stock outstanding	269,768
Intrinsic value of outstanding shares expected to vest	$ 2.6

Equity Incentive Plans (Summary of Assumptions Used in Option Valuation) (Details) - Stock Options [Member]	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected life (in years)			5 years
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	1.89%	1.15%	0.90%
Expected life (in years)	5 years	5 years
Expected volatility	51.00%	52.00%	52.00%
Dividend yield	1.00%	0.00%	0.00%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate	2.12%	1.52%	1.07%
Expected life (in years)	6 years	7 years
Expected volatility	55.00%	53.00%	53.00%
Dividend yield	2.00%	0.00%	0.00%

Equity Incentive Plans (Summary of Stock Option Activity) (Details) - Stock Options [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Beginning Balance	2,360,541	2,624,945	2,471,000
Shares, Granted	305,150	443,500	482,671
Shares, Exercised	(313,372)	(95,786)	(69,932)
Shares, Cancelled/Forfeited	(619,755)	(612,118)	(258,794)
Shares, Ending Balance	1,732,564	2,360,541	2,624,945	2,471,000
Shares, Exercisable	1,114,835
Shares, Vested and expected to vest	2,032,314
Weighted Average Exercise Price, Beginning Balance	$ 13.84	$ 13.07	$ 13.27
Weighted Average Exercise Price, Granted	13.49	15.43	10.91
Weighted Average Exercise Price, Exercises	10.07	10.47	10.00
Weighted Average Exercise Price, Cancelled/Forfeited	13.04	12.33	11.81
Weighted Average Exercise Price, Ending Balance	14.74	13.84	13.07	$ 13.27
Weighted Average Exercise Price, Exercisable	15.98
Weighted Average Exercise Price, Vested and expected to vest	14.04
Weighted Avg Grant Date Fair Value, Beginning Balance	6.71	6.30	6.45
Weighted Avg Grant Date Fair Value, Granted	5.88	7.37	5.00
Weighted Avg Grant Date Fair Value, Exercised	5.44	5.40	5.17
Weighted Avg Grant Date Fair Value, Cancelled/Forfeited	6.29	5.68	5.61
Weighted Avg Grant Date Fair Value, Ending Balance	$ 6.95	$ 6.71	$ 6.30	$ 6.45
Weighted Avg Grant Date Fair Value, Exercisable	7.65
Weighted Avg Grant Date Fair Value, Vested and expected to vest	$ 6.59
Weighted Avg Remaining Contractual Term (Years), Options Outstanding	4 years 6 months	5 years 8 months 12 days	6 years 6 months	7 years 7 months 6 days
Weighted Avg Remaining Contractual Term (Years), Exercisable	3 years 6 months
Weighted Avg Remaining Contractual Term (Years), Vested and expected to vest	4 years 6 months
Aggregate Intrinsic Value, Share Outstanding	$ 365	$ 15,971	$ 12,757	$ 38
Aggregate Intrinsic Value, Vested and expected to vest	$ 365

Equity Incentive Plans (Summary of Stock Options Outstanding) (Details) - Stock Options [Member] - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options	1,732,564	2,360,541	2,624,945	2,471,000
Exercise Price	$ 14.74	$ 13.84	$ 13.07	$ 13.27
Remaining Contractual Life-Years	4 years 6 months	5 years 8 months 12 days	6 years 6 months	7 years 7 months 6 days
$5.00 to $10.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit	$ 5.00
Range of Exercise Price, Upper Limit	$ 10.00
Options	652,411
Exercise Price	$ 9.22
Remaining Contractual Life-Years	5 years 3 months 18 days
$10.01 to $15.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit	$ 10.01
Range of Exercise Price, Upper Limit	$ 15.00
Options	509,478
Exercise Price	$ 12.32
Remaining Contractual Life-Years	3 years 9 months 22 days
$15.01 to $20.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit	$ 15.01
Range of Exercise Price, Upper Limit	$ 20.00
Options	244,875
Exercise Price	$ 17.87
Remaining Contractual Life-Years	5 years 9 months
$20.01 to $25.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit	$ 20.01
Range of Exercise Price, Upper Limit	$ 25.00
Options	87,800
Exercise Price	$ 22.39
Remaining Contractual Life-Years	6 years 8 months 16 days
$25.01 to $30.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Price, Lower Limit	$ 25.01
Range of Exercise Price, Upper Limit	$ 30.00
Options	238,000
Exercise Price	$ 29.02
Remaining Contractual Life-Years	1 year 8 months 23 days

Equity Incentive Plans (Summary of Restricted Stock Activity) (Details) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Nonvested, Beginning Balance	85,884	79,036	189,235
Shares, Granted	324,184	73,384	54,036
Shares, Vested	(47,051)	(66,536)	(164,235)
Shares, Forfeited	(87,849)
Shares, Nonvested, Ending Balance	275,168	85,884	79,036
Weighted Avg Grant Date Fair Value, Nonvested, Beginning Balance	$ 19.25	$ 17.67	$ 14.67
Weighted Avg Grant Date Fair Value, Granted	13.55	17.60	12.45
Weighted Avg Grant Date Fair Value, Vested	19.93	15.55	12.50
Weighted Avg Grant Date Fair Value, Forfeited	17.71
Weighted Avg Grant Date Fair Value, Nonvested, Ending Balance	$ 13.03	$ 19.25	$ 17.67

Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
Income Taxes (Narrative) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes Disclosure [Line Items]
Effective income tax rate	55.20%	41.10%	41.40%
Provision for income taxes	$ 13,340,000	$ 12,876,000	$ 11,076,000
Deferred income taxes on undistributed foreign earnings	700,000
Liability for uncertain tax positions	0	0
Income tax interest and penalties related to uncertain tax positions	$ 0	$ 0
Tax Year 2017 [Member]
Income Taxes Disclosure [Line Items]
Effective income tax rate	35.00%
Tax Year 2018 [Member]
Income Taxes Disclosure [Line Items]
Effective income tax rate	21.00%

Income Taxes (Schedule of Components of Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Taxes [Abstract]
Current, Federal	$ 2,721	$ 10,831	$ 3,691
Current, State	872	2,560	1,886
International	30	30
Total Current	3,623	13,421	5,577
Deferred, Federal	9,354	(363)	5,252
Deferred, State	363	(182)	247
Total Deferred	9,717	(545)	5,499
Total Provision for Income Taxes	$ 13,340	$ 12,876	$ 11,076

Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($)
$ in Millions

12 Months Ended

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2015

Income Taxes [Abstract]

Federal statutory rate

35.00%

Tax reform

^[1]

18.90%

State income taxes, net of the federal tax benefit

4.10%

4.40%

Stock based compensation

(2.00%)

1.60%

1.40%

Other

(0.80%)

0.10%

0.60%

Effective tax rate

55.20%

41.10%

41.40%

Change in tax rate, tax expense

$ 4.6

[1]

201720162015Federal statutory rate 35.0% 35.0% 35.0%Tax reform(1) 18.9 - -State income taxes, net of the federal tax benefit 4.1 4.4 4.4Stock based compensation (2.0) 1.6 1.4Other (0.8) 0.1 0.6Effective tax rate 55.2% 41.1% 41.4%Due to the Tax Act, the Company re-measured its U.S. deferred tax assets as of December 31, 2017 from 35% to 21%, resulting in $4.6 million of income tax expense.

Income Taxes (Schedule of Components of Net Deferred Income Taxes) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Section 743 carryforward	$ 16,508	$ 27,251
Leasehold improvement reimbursements	3,642	5,299
Inventory	1,229	1,707
Deferred rent	5,456	6,794
Stock based compensation	2,016	3,112
Other	206	3,064
Total deferred income tax assets	29,057	47,227
Depreciation	17,403	25,836
Total deferred income tax liabilities	17,403	25,836
Net deferred income tax assets	$ 11,654	$ 21,391

New Market Tax Credit (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Dec. 31, 2016	Jul. 31, 2013	Dec. 31, 2017
New Market Tax Credit Disclosure [Line Items]
Reimbursements received			$ 6.0
Restricted cash			$ 0.9
Chase and US Bank [Member]
New Market Tax Credit Disclosure [Line Items]
Contribution to affiliate		$ 5.6
Twain Investment Fund 192 [Member]
New Market Tax Credit Disclosure [Line Items]
Net proceeds from contribution	$ 1.9
Contribution liability compliance period			7 years
Contribution liability			$ 2.7
Contribution liability, current			0.4
Contribution liability, noncurrent			$ 2.3
Twain Investment Fund 192 [Member] \| Tile Shop Holdings [Member]
New Market Tax Credit Disclosure [Line Items]
Syndicate costs	1.2
Twain Investment Fund 192 [Member] \| Tile Shop Lending [Member]
New Market Tax Credit Disclosure [Line Items]
Loan amount	$ 6.7
Loan interest rate	1.37%
Loan maturity date			Dec. 31, 2046
Tile Shop Investment Fund [Member]
New Market Tax Credit Disclosure [Line Items]
Contribution to affiliate		4.4
Contribution liability compliance period			7 years
Contribution liability			$ 1.7
Contribution liability, current			0.7
Contribution liability, noncurrent			$ 1.0
Tile Shop Investment Fund [Member] \| Tile Shop Holdings [Member]
New Market Tax Credit Disclosure [Line Items]
Syndicate costs		1.2
Tile Shop Investment Fund [Member] \| Tile Shop Lending [Member]
New Market Tax Credit Disclosure [Line Items]
Loan amount		13.5
U.S. Bank Community [Member] \| Twain Investment Fund 192 [Member]
New Market Tax Credit Disclosure [Line Items]
Contribution to affiliate	$ 3.1
U.S. Bank Community [Member] \| Oklahoma [Member]
New Market Tax Credit Disclosure [Line Items]
Financing agreement project cost	$ 9.2
Chase and US Bank [Member] \| Oklahoma [Member]
New Market Tax Credit Disclosure [Line Items]
Financing agreement project cost		$ 19.1

Retirement Savings Plan (Narrative) (Details) - USD ($)	12 Months Ended			36 Months Ended
Retirement Savings Plan (Narrative) (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2017
Retirement Savings Plan [Abstract]
Matching contribution amount	$ 1,400,000	$ 500,000	$ 400,000
Discretionary contribution amount				$ 0

Quarterly Financial Data (Schedule of Quarterly Results of Operations) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Data [Abstract]
Net sales	$ 78,580	$ 84,421	$ 89,464	$ 92,135	$ 76,614	$ 78,559	$ 84,270	$ 84,714	$ 344,600	$ 324,157	$ 292,987
Gross profit	52,467	56,662	62,348	64,745	53,333	55,159	58,699	59,705	236,222	226,896	203,610
Income (loss) from operations	(3,664)	4,377	11,600	13,533	1,650	7,798	11,709	11,756	25,846	32,913	29,226
Net income (loss)	$ (7,351)	$ 2,438	$ 7,723	$ 8,009	$ 273	$ 4,583	$ 6,849	$ 6,758	$ 10,819	$ 18,463	$ 15,696
Basic earnings (loss) per share	$ (0.14)	$ 0.05	$ 0.15	$ 0.16	$ 0.01	$ 0.09	$ 0.13	$ 0.13	$ 0.21	$ 0.36	$ 0.31
Diluted earnings (loss) per share	$ (0.14)	$ 0.05	$ 0.15	$ 0.15	$ 0.01	$ 0.09	$ 0.13	$ 0.13	$ 0.21	$ 0.36	$ 0.31

Subsequent Event (Narrative) (Details) - Subsequent Event [Member]	Feb. 21, 2018 $ / shares
Subsequent Event [Line Items]
Dividends payable, date declared	Feb. 21, 2018
Dividends payable, amount per share	$ 0.05
Dividends payable, date of record	Mar. 05, 2018
Dividends payable, date to be paid	Mar. 16, 2018

Subsequent Event	12 Months Ended
Subsequent Event	Dec. 31, 2017
Subsequent Event [Abstract]
Subsequent Events	Note 14: Subsequent Event On February 21, 2018, the Company declared a $0.05 dividend to stockholders of record as of the close of business on March 5, 2018. The dividend will be paid on March 16, 2018.