CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 10,941	$ 9,483	$ 16,210	$ 24,286
Other comprehensive income (loss):
Amount of Gain/(Loss) recognized in OCI	881	(527)	2,873	310
Less income tax benefit (expense)	(226)	205	(738)	(121)
Foreign currency translation adjustment	(4,195)	1,425	(1,603)	2,205
Less income tax expense	0	0	0	(252)
Total other comprehensive income (loss)	(3,540)	1,103	532	2,142
Total comprehensive income	$ 7,401	$ 10,586	$ 16,742	$ 26,428