CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net income	$ 37,051	$ 52,655	$ 40,363
Other comprehensive income (loss):
Foreign currency translation adjustments	26,871	(492)	884
Unrealized gains (losses) on foreign currency contracts, net of reclassification adjustments and tax	191	(200)	109
Change in unrealized gains on available-for-sale marketable securities, net of tax	(174)	(245)	(460)
Comprehensive income	$ 63,939	$ 51,718	$ 40,896