Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 3,644	$ 2,653	$ 21,712	$ 3,302
Foreign currency translation adjustments (net of tax benefit of $0, $0, $987, $0)	(1,670)	1,657	(11,548)	9,481
Comprehensive income	$ 1,974	$ 4,310	$ 10,164	$ 12,783