Segment and Enterprise-wide Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) segment	Jun. 30, 2014 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			2
Net sales	$ 59,695	$ 48,546	$ 155,934	$ 120,450
Contribution	6,911	6,366	28,874	20,293
Reconciliation of consolidated contribution to income (loss) from continuing operations:
Operating expenses	(26,724)	(22,401)	(63,008)	(51,880)
Income tax expense	(1,485)	(836)	(8,154)	(4,030)
Income from continuing operations	2,219	1,498	13,078	7,246
Direct
Segment Reporting Information [Line Items]
Net sales	41,662	32,355	115,719	83,091
Contribution	5,106	3,889	24,677	14,242
Retail
Segment Reporting Information [Line Items]
Net sales	17,404	15,039	38,694	35,142
Contribution	1,176	1,325	2,676	3,834
Unallocated royalty income
Segment Reporting Information [Line Items]
Net sales	629	1,152	1,521	2,217
Contribution	629	1,152	1,521	2,217
Reconciliation of consolidated contribution to income (loss) from continuing operations:
Operating expenses	(2,979)	(3,987)	(7,337)	(8,912)
Other expense, net	(228)	(45)	(305)	(105)
Income tax expense	(1,485)	(836)	(8,154)	(4,030)
Income from continuing operations	$ 2,219	$ 1,498	$ 13,078	$ 7,246