Consolidated Statements Of Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Sales
Domestic sales	$ 21,141	$ 17,939	$ 59,474	$ 54,190
International sales	24,633	21,502	58,536	52,600
Total sales	45,774	39,441	118,010	106,790
Cost of goods sold	30,490	27,105	81,388	75,155
Gross profit	15,284	12,336	36,622	31,635
Operating expenses
Selling, general and administrative	14,431	11,483	39,826	37,311
Restructuring charge	33	282	116	1,275
Transaction costs	1,869		1,869	269
Arbitration award				(1,967)
Total operating expenses	16,333	11,765	41,811	36,888
Operating income (loss)	(1,049)	571	(5,189)	(5,253)
Other income (expense)
Interest income (expense), net	(71)	(719)	(948)	(2,142)
Other, net	213	422	435	826
Total other income (expense), net	142	(297)	(513)	(1,316)
Income (loss) before income tax	(907)	274	(5,702)	(6,569)
Income tax expense (benefit)	676	679	990	1,020
Net income (loss)	(1,583)	(405)	(6,692)	(7,589)
Other comprehensive income (loss), net of tax:
Unrealized income (loss) on marketable securities		(68)		107
Foreign currency translation adjustment	684	176	2,305	522
Unrealized income (loss) on hedging activities	(419)	147	(1,797)	70
Other comprehensive income (loss)	265	255	508	699
Comprehensive income (loss)	$ (1,318)	$ (150)	$ (6,184)	$ (6,890)
Net income (loss) per share:
Basic	$ (0.05)	$ (0.01)	$ (0.22)	$ (0.25)
Diluted	$ (0.05)	$ (0.01)	$ (0.22)	$ (0.25)
Weighted average shares outstanding:
Basic	30,017	30,063	30,015	30,525
Diluted	30,017	30,063	30,015	30,525