CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 4,351	$ 5,174
Other comprehensive income (loss):
Interest rate swap	(729)	(898)
Less income tax benefit	284	349
Foreign currency translation adjustment	1,228	(2,311)
Less income tax benefit (expense)	(90)	106
Total other comprehensive income (loss)	693	(2,754)
Total comprehensive income	$ 5,044	$ 2,420