CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Service revenues	$ 25,086	$ 23,828
Product revenues	8,422	8,728
Total net revenues	33,508	32,556
Cost of services	22,329	22,299
Cost of products	4,326	4,156
Gross profit	6,853	6,101
Operating expenses:
Research, development and engineering	4,255	3,495
Marketing and sales	5,098	4,486
General, administrative and other operating expenses	10,140	12,032
Total operating expenses	19,493	20,013
Loss from operations	(12,640)	(13,912)
Interest expense, net	(3,836)	(4,464)
Other expense, net	(791)	(5,068)
Loss before income taxes	(17,267)	(23,444)
Income tax expense (benefit)	1,072	(418)
Net loss	(18,339)	(23,026)
Net income attributable to noncontrolling interest	(87)	(316)
Net loss attributable to ION	$ (18,426)	$ (23,342)
Net loss per share:
Basic (usd per share)	$ (1.44)	$ (1.98)
Diluted (usd per share)	$ (1.44)	$ (1.98)
Weighted average number of common shares outstanding
Basic, in shares	12,813	11,818
Diluted, in shares	12,813	11,818