Consolidated Statements of Comprehensive loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements of Comprehensive Loss
Net loss	$ (12,025)	$ (41,087)	$ (48,359)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	768	(4,509)	2,470
Comprehensive loss	(11,257)	(45,596)	$ (45,889)
Less: Comprehensive (income) loss attributable to noncontrolling interest	(1,090)	43,182
Comprehensive loss attributable to common shareholders	$ (12,347)	$ (2,414)