CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 8,731	$ 4,954	$ (31,534)
Other comprehensive (loss) income, before income taxes:
Unrealized foreign currency translation (loss) gain	(34)	(89)	14
Other comprehensive (loss) income, before income taxes	(34)	(89)	14
Income tax expense related to items of other comprehensive (loss) income	0	0	162
Other comprehensive loss, net of taxes	(34)	(89)	(148)
Comprehensive income (loss)	8,697	4,865	(31,682)
Less: Net income attributable to noncontrolling interest in subsidiary	764	536	249
Comprehensive income (loss)	$ 7,933	$ 4,329	$ (31,931)