Consolidated Statements Of Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Sales
Domestic sales	$ 76,079	$ 74,391	$ 67,817
International sales	72,110	80,875	90,486
Total sales	148,189	155,266	158,303
Cost of goods sold	104,505	101,020	100,674
Gross profit	43,684	54,246	57,629
Operating expenses
Selling, general and administrative	49,936	58,499	64,035
Restructuring charge	1,395	3,375	3,583
Transaction costs	290	946
Arbitration award	(1,967)
Impairment of goodwill		29,507
Total operating expenses	49,654	92,327	67,618
Operating loss	(5,970)	(38,081)	(9,989)
Other (expense) income
Interest expense, net	(2,876)	(2,767)	(2,563)
Other, net	533	434	(884)
Total other expense, net	(2,343)	(2,333)	(3,447)
Loss from continuing operations before income tax	(8,313)	(40,414)	(13,436)
Income tax expense (benefit)	665	47,692	(3,818)
Loss from continuing operations	(8,978)	(88,106)	(9,618)
Discontinued operations, net of tax		10,564	23,625
Net (loss) income	(8,978)	(77,542)	14,007
Other comprehensive income (loss), net of tax:
Unrealized income (loss) on marketable securities	107	(48)	(59)
Foreign currency translation adjustment	(694)	3,209	(11,418)
Unrealized income (loss) on hedging activities	792	(1,959)	2,502
Other comprehensive income (loss)	205	1,202	(8,975)
Comprehensive (loss) income	$ (8,773)	$ (76,340)	$ 5,032
Loss from continuing operations per share:
Basic	$ (0.30)	$ (2.70)	$ (0.30)
Diluted	(0.30)	(2.70)	(0.30)
Net (loss) income per share:
Basic	(0.30)	(2.38)	0.43
Diluted	$ (0.30)	$ (2.38)	$ 0.43
Weighted average shares outstanding:
Basic	30,397	32,600	32,567
Diluted	30,397	32,600	32,567