Segment and Enterprise-wide Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 segment	Jun. 30, 2013
Segment Reporting Information [Line Items]
Number of reportable segments			2
Net sales	$ 48,546	$ 36,242	$ 120,450	$ 95,456
Contribution	6,366	1,401	20,293	11,515
Reconciliation of consolidated contribution to income (loss) from continuing operations:
Operating expenses	(22,401)	(19,053)	(51,880)	(43,753)
Income tax (expense) benefit	(836)	34,268	(4,030)	33,915
Income from continuing operations	1,498	32,668	7,246	38,192
Customer Concentration Risk [Member] | Sales
Reconciliation of consolidated contribution to income (loss) from continuing operations:
Number of customers representing 10% or more of total Net Sales		0		0
Amazon.com | Customer Concentration Risk [Member] | Sales
Reconciliation of consolidated contribution to income (loss) from continuing operations:
Percentage of Net Sales	10.90%		10.30%
Direct
Segment Reporting Information [Line Items]
Net sales	32,355	25,314	83,091	67,949
Contribution	3,889	508	14,242	7,217
Retail
Segment Reporting Information [Line Items]
Net sales	15,039	10,175	35,142	25,309
Contribution	1,325	140	3,834	2,100
Unallocated royalty income
Segment Reporting Information [Line Items]
Net sales	1,152	753	2,217	2,198
Contribution	1,152	753	2,217	2,198
Reconciliation of consolidated contribution to income (loss) from continuing operations:
Operating expenses	(3,987)	(3,125)	(8,912)	(7,245)
Other income (expense), net	(45)	124	(105)	7
Income tax (expense) benefit	(836)	34,268	(4,030)	33,915
Income from continuing operations	$ 1,498	$ 32,668	$ 7,246	$ 38,192