CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 3,339	$ 2,546	$ 9,272	$ 13,766
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale securities, net of taxes	672	(21)	755	(1,694)
Net gain reclassified from accumulated other comprehensive income to net income	0	0	0	(468)
Translation adjustments	(5,807)	(9,388)	(10,813)	(7,039)
Total other comprehensive loss	(5,135)	(9,409)	(10,058)	(9,201)
Comprehensive income	$ (1,796)	$ (6,863)	$ (786)	$ 4,565