Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Consolidated net income (loss)	$ 1,920	$ (1,718)
Other comprehensive (loss) income, before income tax:
Unrealized foreign currency translation (loss) gain	(27)	34
Net change in fair value of hedging transactions	(228)	0
Other comprehensive (loss) income, before income taxes	(255)	34
Income tax benefit related to foreign currency translation adjustments	(4)	0
Income tax benefit related to change in fair value of hedging transactions	(57)	0
Other comprehensive (loss) income, net of tax	(194)	34
Comprehensive income (loss)	1,726	(1,684)
Less: Net income attributable to noncontrolling interest in subsidiary	278	292
Comprehensive income (loss) attributable to common shareholders	$ 1,448	$ (1,976)