Condensed Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Condensed Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net income (loss)	$ (1,200)	$ 143	$ (3,346)	$ 235
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	(176)	(79)	(255)	132
Unrealized gains (losses) on available-for-sale securities:
Unrealized gains (losses) for the period	(27)	5	6	(1)
Reclassification adjustment for (gains) losses included in net income (loss)	(2)	(4)	21	(4)
Total unrealized gains (losses) on available-for-sale securities	(29)	1	27	(5)
Unrealized gains (losses) on foreign exchange forward contracts:
Unrealized gains (losses) for the period	(153)	(69)	(292)	254
Reclassification adjustment for (gains) losses included in net income (loss)	(14)	95	(47)	170
Total unrealized gains (losses) on foreign exchange forward contracts	(167)	26	(339)	424
Other comprehensive income (loss), before tax	(372)	(52)	(567)	551
Income tax provision related to items of other comprehensive income (loss)		6		142
Other comprehensive income (loss), net of tax	(372)	(58)	(567)	409
Total comprehensive income (loss)	$ (1,572)	$ 85	$ (3,913)	$ 644