Condensed Consolidated Statements of Operations and Comprehensive Income (loss) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]
Product sales	$ 89,684	$ 91,336
Marketing service fees	11,658	12,037
Net sales	101,342	103,373
Cost of sales	22,632	25,617
Gross profit	78,710	77,756
Operating expenses
Sales and marketing	43,871	45,054
General and administrative	17,545	18,330
Research and development	5,939	5,741
Amortization of intangible assets	584	544
Costs related to the accounting review and restatement	8,306
Total operating expenses	76,245	69,669
Operating income	2,465	8,087
Other income and expense
Interest expense, net	(486)	(560)
Other income (expense)	(261)	4,764
Total other income (expense)	(747)	4,204
Income before income taxes	1,718	12,291
Income tax expense	(1,940)	(4,681)
Net income (loss) from continuing operations	(222)	7,610
Discontinued operations (Note 14)
Loss from discontinued operations	(794)	(4,434)
Income tax benefit	234	1,324
Net loss from discontinued operations	(560)	(3,110)
Net income (loss)	(782)	4,500
Net income (loss) per common share- basic:
Net income from continuing operations	$ (0.01)	$ 0.39
Net loss from discontinued operations	$ (0.03)	$ (0.16)
Net income (loss) per common share- basic	$ (0.04)	$ 0.23
Net income (loss) per common share- diluted:
Net income from continuing operations	$ (0.01)	$ 0.39
Net loss from discontinued operations	$ (0.03)	$ (0.16)
Net income (loss) per common share- diluted	$ (0.04)	$ 0.23
Weighted average number of common shares:
Basic	18,197,363	19,431,093
Diluted	18,197,363	19,691,141
Other comprehensive income:
Unrealized gain (loss) on cross-currency swap, net of tax	103	(318)
Foreign currency translation adjustment	439	(2,708)
Comprehensive income (loss)	$ (240)	$ 1,474