CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 9,483	$ 7,290	$ 24,286	$ 11,641
Other comprehensive income (loss):
Cash flow hedges	(527)	(152)	310	(881)
Less income tax benefit (expense)	205	59	(121)	343
Foreign currency translation adjustment	1,425	(423)	2,205	805
Less income tax benefit (expense)	0	(120)	(252)	(209)
Total other comprehensive income	1,103	(636)	2,142	58
Total comprehensive income	$ 10,586	$ 6,654	$ 26,428	$ 11,699