CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 4,772	$ 6,015	$ 5,933	$ 11,220
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale securities, net of taxes	31	(198)	83	(1,673)
Net gain reclassified from accumulated other comprehensive income to net income	0	0	0	(468)
Translation adjustments	4,326	2,429	(5,006)	2,349
Total other comprehensive income (loss)	4,357	2,231	(4,923)	208
Comprehensive income	$ 9,129	$ 8,246	$ 1,010	$ 11,428