Condensed Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Condensed Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net loss	$ (774)	$ (447)	$ (4,120)	$ (212)
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	115	212	(140)	344
Unrealized gains (losses) on available-for-sale securities:
Unrealized gains (losses)	24	(72)	30	(73)
Reclassification adjustment for (gains) losses included in net loss		(2)	21	(6)
Total unrealized gains (losses) on available-for-sale securities	24	(74)	51	(79)
Unrealized gains (losses) on foreign exchange forward contracts:
Unrealized gains (losses)	61	290	(231)	544
Reclassification adjustment for losses included in net loss	71		24	170
Total unrealized gains (losses) on foreign exchange forward contracts	132	290	(207)	714
Other comprehensive income (loss), before tax	271	428	(296)	979
Income tax provision related to items of other comprehensive income (loss)		93		235
Other comprehensive income (loss), net of tax	271	335	(296)	744
Total comprehensive income (loss)	$ (503)	$ (112)	$ (4,416)	$ 532