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
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 851	$ 870	$ 1,345	$ 1,390
Other comprehensive income (loss):
Foreign currency translation adjustment	0	16	(17)	47
Comprehensive income	$ 851	$ 886	$ 1,328	$ 1,437