Details of Selected Balance Sheet Accounts Details of Selected Balance Sheet Accounts - Multi-Client Data Library (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Gross costs of multi-client data creation	$ 1,007,762	$ 972,309
Less: accumulated amortization	(816,401)	(776,860)
Less: impairments to multi-client data library	(130,977)	(121,905)
Multi-client data library, net	60,384	73,544
Amortization of multi-client data library	39,541	48,988	$ 47,102
Impairment of multi-client data library	$ 9,072	$ 0	$ 2,304

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.

Name:	us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration