Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Service revenues	$ 130,640	$ 160,480	$ 384,938
Product revenues	42,168	61,033	124,620
Total net revenues	172,808	221,513	509,558
Cost of services	115,763	179,816	278,627
Cost of products	21,013	33,295	68,608
Impairment of multi-client data library	0	399	100,100
Gross profit	36,032	8,003	62,223
Operating expenses:
Research, development and engineering	17,833	26,445	41,009
Marketing and sales	17,371	30,493	39,682
General, administrative and other operating expenses	43,999	51,697	76,177
Impairment of goodwill and intangible assets	0	0	23,284
Total operating expenses	79,203	108,635	180,152
Income (loss) from operations	(43,171)	(100,632)	(117,929)
Interest expense, net	(18,485)	(18,753)	(19,382)
Equity in losses of investments	0	0	(49,485)
Other income (expense)	1,350	98,275	79,860
Loss before income taxes	(60,306)	(21,110)	(106,936)
Income tax expense	4,421	4,044	20,582
Net income (loss)	(64,727)	(25,154)	(127,518)
Net (income) loss attributable to noncontrolling interests	(421)	32	(734)
Net loss attributable to ION	$ (65,148)	$ (25,122)	$ (128,252)
Net loss per share:
Basic (usd per share)	$ (5.71)	$ (2.29)	$ (11.72)
Diluted (usd per share)	$ (5.71)	$ (2.29)	$ (11.72)
Weighted average number of common shares outstanding:
Basic (in shares)	11,400	10,957	10,939
Diluted (in shares)	11,400	10,957	10,939