CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 973	$ 4,818	$ 12,615	$ 17,393
Other comprehensive income (loss):
Interest rate swap	(103)	(621)	(984)	(1,421)
Less income tax benefit	40	242	383	553
Foreign currency translation adjustment	454	(497)	1,259	(2,106)
Less income tax benefit (expense)	0	185	(210)	258
Total other comprehensive income (loss)	391	(691)	448	(2,716)
Total comprehensive income	$ 1,364	$ 4,127	$ 13,063	$ 14,677