CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (3,329)	$ (7,462)	$ (32,864)	$ (51,301)
Other comprehensive loss, net of taxes, as appropriate:
Foreign currency translation adjustments	(1,028)	43	(998)	(712)
Comprehensive net loss	(4,357)	(7,419)	(33,862)	(52,013)
Comprehensive income attributable to noncontrolling interest	(394)	(74)	(841)	(527)
Comprehensive net loss attributable to ION	$ (4,751)	$ (7,493)	$ (34,703)	$ (52,540)