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	$ 7,764	$ 5,607	$ 14,303	$ 10,030
Other comprehensive income (loss):
Interest rate swap	794	(722)	(66)	2,533
Less income tax benefit (expense)	(308)	281	26	(985)
Foreign currency translation adjustment	(682)	342	(739)	253
Less income tax benefit (expense)	151	(8)	182	8
Total other comprehensive income (loss)	(45)	(107)	(597)	1,809
Total comprehensive income	$ 7,719	$ 5,500	$ 13,706	$ 11,839