Condensed Consolidating Financial Information - Condensed Consolidating Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Income Statements, Captions [Line Items]
Total net revenues	$ 42,709	$ 53,239	$ 41,775	$ 36,956	$ 74,594	$ 47,200	$ 24,743	$ 33,508	$ 174,679	$ 180,045	$ 197,554
Cost of goods sold									114,657	120,425	121,915
Gross profit	5,239	25,288	19,583	9,912	37,809	16,475	(1,517)	6,853	60,022	59,620	75,639
Total operating expenses									84,481	113,892	84,338
Income (loss) from operations	(9,827)	3,858	(2,553)	(15,937)	(16,661)	(2,452)	(22,519)	(12,640)	(24,459)	(54,272)	(8,699)
Interest expense, net	(3,696)	(3,155)	(3,111)	(3,112)	(3,203)	(3,022)	(2,911)	(3,836)	(13,074)	(12,972)	(16,709)
Intercompany interest, net									0	0	0
Equity in earnings (losses) of investments									0	0	0
Other expense, net	(679)	(242)	96	(792)	180	91	84	(791)	(1,617)	(436)	(3,945)
Loss before income taxes									(39,150)	(67,680)	(29,353)
Income tax expense (benefit)	148	3,790	2,719	1,407	(587)	2,079	154	1,072	8,064	2,718	24
Net income (loss)									(47,214)	(70,398)	(29,377)
Less: Net income attributable to noncontrolling interests	(144)	(394)	(335)	(112)	(246)	(74)	(366)	(87)	(985)	(773)	(865)
Net loss attributable to ION	$ (14,494)	$ (3,723)	$ (8,622)	$ (21,360)	$ (19,343)	$ (7,536)	$ (25,866)	$ (18,426)	(48,199)	(71,171)	(30,242)
Comprehensive net income (loss)									(46,090)	(71,961)	(26,508)
Comprehensive income attributable to noncontrolling interests									(985)	(773)	(865)
Comprehensive net loss attributable to ION									(47,075)	(72,734)	(27,373)
Reportable Legal Entities | ION Geophysical Corporation
Condensed Income Statements, Captions [Line Items]
Total net revenues									0	0	0
Cost of goods sold									0	0	0
Gross profit									0	0	0
Total operating expenses									37,293	32,888	39,000
Income (loss) from operations									(37,293)	(32,888)	(39,000)
Interest expense, net									(12,827)	(13,010)	(16,729)
Intercompany interest, net									513	1,124	1,084
Equity in earnings (losses) of investments									1,464	(26,446)	27,696
Other expense, net									(12)	(196)	(4,610)
Loss before income taxes									(48,155)	(71,416)	(31,559)
Income tax expense (benefit)									44	(245)	(1,317)
Net income (loss)									(48,199)	(71,171)	(30,242)
Less: Net income attributable to noncontrolling interests									0	0	0
Net loss attributable to ION									(48,199)	(71,171)	(30,242)
Comprehensive net income (loss)									(47,075)	(72,734)	(27,373)
Comprehensive income attributable to noncontrolling interests									0	0	0
Comprehensive net loss attributable to ION									(47,075)	(72,734)	(27,373)
Reportable Legal Entities | The Guarantors
Condensed Income Statements, Captions [Line Items]
Total net revenues									90,526	96,649	148,590
Cost of goods sold									86,531	85,186	90,754
Gross profit									3,995	11,463	57,836
Total operating expenses									32,435	29,235	28,020
Income (loss) from operations									(28,440)	(17,772)	29,816
Interest expense, net									(638)	(136)	(107)
Intercompany interest, net									(1,423)	(12,137)	(6,613)
Equity in earnings (losses) of investments									35,950	37,219	67,290
Other expense, net									(407)	116	(407)
Loss before income taxes									5,042	7,290	89,979
Income tax expense (benefit)									(1,060)	(6,711)	(1,427)
Net income (loss)									6,102	14,001	91,406
Less: Net income attributable to noncontrolling interests									0	0	0
Net loss attributable to ION									6,102	14,001	91,406
Comprehensive net income (loss)									6,059	13,953	91,358
Comprehensive income attributable to noncontrolling interests									0	0	0
Comprehensive net loss attributable to ION									6,059	13,953	91,358
Reportable Legal Entities | All Other Subsidiaries
Condensed Income Statements, Captions [Line Items]
Total net revenues									84,153	83,396	48,964
Cost of goods sold									28,126	35,239	31,161
Gross profit									56,027	48,157	17,803
Total operating expenses									14,753	51,769	17,318
Income (loss) from operations									41,274	(3,612)	485
Interest expense, net									391	174	127
Intercompany interest, net									910	11,013	5,529
Equity in earnings (losses) of investments									0	0	0
Other expense, net									(1,198)	(356)	1,072
Loss before income taxes									41,377	7,219	7,213
Income tax expense (benefit)									9,080	9,674	2,768
Net income (loss)									32,297	(2,455)	4,445
Less: Net income attributable to noncontrolling interests									(985)	(773)	(865)
Net loss attributable to ION									31,312	(3,228)	3,580
Comprehensive net income (loss)									32,413	(4,797)	6,550
Comprehensive income attributable to noncontrolling interests									(985)	(773)	(865)
Comprehensive net loss attributable to ION									31,428	(5,570)	5,685
Consolidating Adjustments
Condensed Income Statements, Captions [Line Items]
Total net revenues									0	0	0
Cost of goods sold									0	0	0
Gross profit									0	0	0
Total operating expenses									0	0	0
Income (loss) from operations									0	0	0
Interest expense, net									0	0	0
Intercompany interest, net									0	0	0
Equity in earnings (losses) of investments									(37,414)	(10,773)	(94,986)
Other expense, net									0	0	0
Loss before income taxes									(37,414)	(10,773)	(94,986)
Income tax expense (benefit)									0		0
Net income (loss)									(37,414)	(10,773)	(94,986)
Less: Net income attributable to noncontrolling interests									0	0	0
Net loss attributable to ION									(37,414)	(10,773)	(94,986)
Comprehensive net income (loss)									(37,487)	(8,383)	(97,043)
Comprehensive income attributable to noncontrolling interests									0	0	0
Comprehensive net loss attributable to ION									$ (37,487)	$ (8,383)	$ (97,043)