Commitments and Contingencies (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($) plaintiff defendant item lawsuit
Beaver County Employees' Retirement Fund, et al v. Tile Shop Holdings, Inc. [Member]
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff	3
Settlement amount | $	$ 9.5
Settlement paid | $	5.0
Settlement amount paid by insurance policy | $	$ 4.5
Beaver County Employees' Retirement Fund, et al v. Tile Shop Holdings, Inc. [Member] | Former Executive Officers [Member]
Loss Contingencies [Line Items]
Number of defendants	2
Beaver County Employees' Retirement Fund, et al v. Tile Shop Holdings, Inc. [Member] | Directors [Member]
Loss Contingencies [Line Items]
Number of defendants	3
Beaver County Employees' Retirement Fund, et al v. Tile Shop Holdings, Inc. [Member] | Former Directors [Member]
Loss Contingencies [Line Items]
Number of defendants	2
Beaver County Employees' Retirement Fund, et al v. Tile Shop Holdings, Inc. [Member] | Underwriting Firms [Member]
Loss Contingencies [Line Items]
Number of defendants	6
Tile Shop Holdings, Inc. Stockholder Derivative Litigation [Member]
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff	3
Number of actions | lawsuit	3
Number of actions consolidated | lawsuit	2
Number of committee members | item	2
Tile Shop Holdings, Inc. Stockholder Derivative Litigation, 2015 [Member] | Directors [Member]
Loss Contingencies [Line Items]
Number of defendants	4
Tile Shop Holdings, Inc. Stockholder Derivative Litigation, 2015 [Member] | Former Directors [Member]
Loss Contingencies [Line Items]
Number of defendants	2
Tile Shop Holdings, Inc. Stockholder Derivative Litigation, 2016 [Member] | Directors [Member]
Loss Contingencies [Line Items]
Number of defendants	7