CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 5,205	$ 7,078
Other comprehensive loss
Unrealized loss on available-for-sale securities, net of taxes	(1,475)	0
Net gain reclassified from accumulated other comprehensive income to net income	(468)	0
Translation adjustments	(80)	(2,665)
Total other comprehensive loss	(2,023)	(2,665)
Comprehensive income	$ 3,182	$ 4,413