Selected Quarterly Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Summary of selected quarterly information
Service revenues	$ 26,140	$ 65,914	$ 25,430	$ 13,156	$ 63,562	$ 53,515	$ 23,323	$ 20,080	$ 130,640	$ 160,480	$ 384,938
Product revenues	9,229	12,708	10,722	9,509	13,904	13,159	13,472	20,498	42,168	61,033	124,620
Total net revenues	35,369	78,622	36,152	22,665	77,466	66,674	36,795	40,578	172,808	221,513	509,558
Gross profit (loss)	8,344	31,765	4,853	(8,930)	22,818	11,108	(10,135)	(15,788)	36,032	8,003	62,223
Income (loss) from operations	(8,318)	11,864	(16,588)	(30,129)	(380)	(12,874)	(40,689)	(46,689)	(43,171)	(100,632)	(117,929)
Interest expense, net	(4,442)	(4,607)	(4,702)	(4,734)	(4,667)	(4,854)	(4,607)	(4,625)	(18,485)	(18,753)	(19,382)
Other income (expense)	4,974	(2,027)	(1,717)	120	240	(346)	101,600	(3,219)	1,350	98,275	79,860
Income tax expense	(1,444)	3,316	2,256	293	447	2,082	532	983	4,421	4,044	20,582
Net (income) loss attributable to noncontrolling interests	(149)	(215)	(79)	22	(290)	(227)	297	252	(421)	32	(734)
Net income (loss) attributable to ION	$ (6,491)	$ 1,699	$ (25,342)	$ (35,014)	$ (5,544)	$ (20,383)	$ 56,069	$ (55,264)	$ (65,148)	$ (25,122)	$ (128,252)
Net loss per share:
Basic (usd per share)	$ (0.55)	$ 0.14	$ (2.22)	$ (3.30)	$ (0.51)	$ (1.86)	$ 5.11	$ (5.04)	$ (5.71)	$ (2.29)	$ (11.72)
Diluted (usd per share)	$ (0.55)	$ 0.14	$ (2.22)	$ (3.30)	$ (0.51)	$ (1.86)	$ 5.11	$ (5.04)	$ (5.71)	$ (2.29)	$ (11.72)