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	$ 20,614	$ 20,006	$ 53,151	$ 43,303
Other comprehensive income (loss)
Translation adjustment, net of tax benefit (expense) of ($63) and $82, ($19) and ($2), respectively	(15,897)	8,264	(17,091)	1,449
Comprehensive income	$ 4,717	$ 28,270	$ 36,060	$ 44,752