Segment and Enterprise-wide Information (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) segment	Sep. 30, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			2
Net sales	$ 91,057	$ 88,132	$ 281,368	$ 278,413	[1]
Reconciliation of consolidated contribution to income (loss) from continuing operations:
Operating expenses	(32,346)	(27,950)	(112,966)	(111,541)	[1]
Income tax expense	(1,870)	(4,862)	(4,645)	(10,156)	[1]
Income from continuing operations	4,503	8,342	13,650	19,093	[1]
Segment Reconciling Items
Reconciliation of consolidated contribution to income (loss) from continuing operations:
Other income (expense), net			236	(648)
Operating Segments
Segment Reporting Information [Line Items]
Net sales	91,057	88,132	281,368	278,413
Contribution	11,956	18,045	33,580	45,774
Operating Segments | Direct
Segment Reporting Information [Line Items]
Net sales	28,955	33,986	134,980	147,800
Contribution	(1,363)	5,289	10,667	23,141
Operating Segments | Retail
Segment Reporting Information [Line Items]
Net sales	61,490	53,505	143,668	128,393
Contribution	12,707	12,118	20,196	20,427
Operating Segments | Royalty
Segment Reporting Information [Line Items]
Royalty	612	641	2,720	2,220
Unallocated royalty income, net	612	638	2,717	2,206
Segment Reconciling Items
Reconciliation of consolidated contribution to income (loss) from continuing operations:
Operating expenses	(5,796)	(4,680)	(15,521)	(15,877)
Other income (expense), net	213	(161)
Income tax expense	$ (1,870)	$ (4,862)	$ (4,645)	$ (10,156)

[1] See Note 2.