Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements of Comprehensive Loss
Net loss	$ (20,410)	$ (24,092)
Other comprehensive income (loss), before tax
Foreign currency translation adjustments, net	(15)	34
Other comprehensive (loss) income , net of tax	(15)	34
Comprehensive loss	(20,425)	(24,058)
Comprehensive income attributable to non-controlling interest	(163)
Comprehensive loss attributable to Onconova Therapeutics, Inc	$ (20,588)	$ (24,058)