Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 12,188	$ 9,261	$ 28,938	$ 26,827
Other comprehensive income (loss), net of tax of $255 and $(283) for the three months ended September 30, 2012 and 2011, respectively and $(132) and $(154) for the nine months ended September 30, 2012 and 2011, respectively:
Foreign currency translation adjustment	(1,737)	3,865	280	(1,211)
Comprehensive income	13,925	5,396	28,658	28,038
Other Comprehensive Income (Loss), Tax	$ 255	$ (283)	$ (132)	$ (154)