Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2015	Jun. 30, 2014	Dec. 31, 2015	Dec. 31, 2014
Valuation Allowance [Line Items]
Equity increase, deferred tax realization			$ 1,400
Components of Deferred Tax Assets and Liabilities [Abstract]
Accrued liabilities	$ 6,392		6,392	$ 3,510
Allowance for doubtful accounts	467		467	33
Inventory valuation	818		818	377
Capitalized indirect inventory costs	671		671	295
Stock-based compensation expense	693		693	558
Deferred rent	869		869	0
Net operating loss carryforward	3,361		3,361	19,742
Basis difference on long-lived assets	1,810		1,810	3,289
Credit carryforward	3,736		3,736	4,565
Other	171		171	339
Total deferred income tax assets before valuation allowance	18,988		18,988	32,708
Valuation allowance	(888)		(888)	(6,156)
Total deferred income tax assets, net of valuation allowance	18,100		18,100	26,552
Prepaid advertising	(523)		(523)	(467)
Other prepaids	(579)		(579)	(696)
Basis difference on long-lived assets	26,285		26,285	3,355
Undistributed earnings of foreign subsidiaries	(188)		(188)	(179)
Other	(1)		(1)	(1)
Deferred income tax liabilities	(27,576)		(27,576)	(4,698)
Net deferred income tax assets (liabilities)	(9,476)		(9,476)	21,854
Number of Years Cumulative Income or Loss Evaluated		3 years
Income tax benefit due to reduction of existing valuation allowance	2,400			$ 1,200
Domestic Tax Authority [Member] | Loss and Other Credit Carryforward [Member]
Components of Deferred Tax Assets and Liabilities [Abstract]
Valuation allowance	$ (600)		$ (600)