Details of Selected Balance Sheet Accounts - Multi-Client Data Library (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Gross costs of multi-client data creation	$ 1,013,181,000		$ 1,013,181,000		$ 1,007,762,000
Less: accumulated amortization	(829,102,000)		(829,102,000)		(816,401,000)
Less: impairments to multi-client data library	(132,144,000)		(132,144,000)		(130,977,000)
Multi-client data library, net	51,935,000		51,935,000		$ 60,384,000
Amortization of multi-client data library			12,701,000	$ 19,396,000
Impairment of multi-client data library	$ 0	$ 0	$ 1,167,000	$ 0

Accumulated amortization of multi-client data creation costs capitalized at the end of the reporting period.

No definition available.

Name:	io_AccumulatedAmortizationOfMultiClientDataCosts
Namespace Prefix:	io_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The aggregate expense charged against earnings to allocate the cost of the multi-client library over the expected benefit period of such asset.

No definition available.

Name:	io_AmortizationOfMultiClientLibrary
Namespace Prefix:	io_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Gross amount of multi-client data creation costs capitalized at the end of the reporting period.

No definition available.

Name:	io_GrossCostsOfMultiClientDataCapitalized
Namespace Prefix:	io_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Multi-Client Data Library, Impaired, Accumulated Impairment Loss

No definition available.

Name:	io_MultiClientDataLibraryImpairedAccumulatedImpairmentLoss
Namespace Prefix:	io_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Multi-client data library impairment charges.

No definition available.

Name:	io_MultiClientDataLibraryImpairmentCharges
Namespace Prefix:	io_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Capitalized costs directly incurred in acquiring and processing of seismic surveys that are licensed on a nonexclusive basis, net of amortization.

No definition available.

Name:	io_MultiClientDataLibraryNet
Namespace Prefix:	io_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration