Unaudited Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Income (loss) from continuing operations	$ 67	$ (743)
Loss from discontinued operations, net of tax	0	(11,235)
Net income (loss)	67	(11,978)
Other comprehensive income (loss):
Foreign currency translation adjustment	(179)	(8)
Comprehensive income (loss)	$ (112)	$ (11,986)