CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 1,095	$ 2,041	$ 881	$ 4,304
Other comprehensive income, before tax:
Foreign currency translation adjustments	161	(76)	430	194
Unrealized gains on available-for-sale securities:
Unrealized gains	11	15	31	68
Reclassification adjustments	0	0	0	0
Total unrealized gains on available-for-sale securities	11	15	31	68
Unrealized gains on foreign exchange forward contracts:
Unrealized gains (losses)	0	(7)	0	53
Reclassification adjustments for losses included in net income	0	5	0	36
Total unrealized gains (losses) on foreign exchange forward contracts	0	(2)	0	89
Other comprehensive income (loss), before tax	172	(63)	461	351
Income tax provision related to items of other comprehensive income (loss)	(63)	0	(149)	0
Other comprehensive income (loss), net of tax	109	(63)	312	351
Total comprehensive income	$ 1,204	$ 1,978	$ 1,193	$ 4,655