Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Jun. 30, 2017	Sep. 30, 2017	Sep. 30, 2016
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Net income (loss)	$ 733	$ 2,283	$ (2,125)	$ 1,138
Foreign currency translation adjustments	64	(242)	(230)	(729)
Comprehensive income (loss)	$ 797	$ 2,041	$ (2,355)	$ 409