Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 7,244	$ 6,143	$ 19,674	$ 16,315
Foreign currency translation adjustments	(3,674)	2,525	(2,446)	(62)
Comprehensive income	$ 3,570	$ 8,668	$ 17,228	$ 16,253