CONSOLIDATED COMPREHENSIVE INCOME (LOSS) STATEMENTS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (587)	$ 119
Other comprehensive income (loss):
Change in foreign currency translation adjustment	3,646	1,383
Comprehensive income (loss)	$ 3,059	$ 1,502