CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,340)	$ (21,248)
Other comprehensive loss, net of taxes, as appropriate:
Foreign currency translation adjustments	(1,781)	970
Total other comprehensive income (loss), net of taxes	(1,781)	970
Comprehensive net loss	(4,121)	(20,278)
Comprehensive (income) loss attributable to noncontrolling interest	77	(112)
Comprehensive net loss attributable to ION	$ (4,044)	$ (20,390)