Condensed Consolidated Statements of Comprehensive Income (Unaudited) - 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	$ 10,846	$ 1,632	$ 18,068	$ 649
Foreign currency translation adjustments (net of tax benefit of $1,486, $0, $987, $0)	(9,212)	5,269	(9,878)	7,824
Comprehensive income	$ 1,634	$ 6,901	$ 8,190	$ 8,473