XML 67 R56.htm IDEA: XBRL DOCUMENT
v3.23.3

Note 14 - Asset Dispositions, Assets Held for Sale and Asset Impairments - Activity in Assets Held for Sale (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($)
Beginning balance |  |  | 8 |
Additions |  |  |  | 1
Ending balance | 1 | 8 | 1 | 8
Vessels Held for Sale [Member] |  |  |  |
Beginning balance | 2 | 9 | 8 | 18
Beginning balance | $ 630 | $ 6,862 | $ 4,195 | $ 14,421
Additions | 0 | 0 | 0 | 1
Additions | $ 0 | $ 0 | $ 0 | $ 2,500
Sales | (1) | (1) | (7) | (10)
Sales | $ (65) | $ (47) | $ (3,630) | $ (8,606)
Ending balance | 1 | 8 | 1 | 8
Ending balance | $ 565 | $ 6,815 | $ 565 | $ 6,815
Transfers |  |  | 0 | (1)
Transfers |  |  | $ 0 | $ (1,500)

X
- Definition The amount of additions to assets held for sale during the period. + References No definition available. + Details
Name: | tdw_AssetsHeldForSaleAdditions
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of sales of assets held for sale during the period. + References No definition available. + Details
Name: | tdw_AssetsHeldForSaleSales
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The amount of increase (decrease) in assets held for sale from transfers. + References No definition available. + Details
Name: | tdw_AssetsHeldForSaleTransfers
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of vessels classified as held for sale. + References No definition available. + Details
Name: | tdw_NumberOfVesselsHeldForSale
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of vessels are classified as held for sale during period. + References No definition available. + Details
Name: | tdw_NumberOfVesselsHeldForSaleAddition
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of vessels classified as held for sale are sold during period. + References No definition available. + Details
Name: | tdw_NumberOfVesselsHeldForSaleSold
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of increase (decrease) in vessels held for sale from transfers. + References No definition available. + Details
Name: | tdw_NumberOfVesselsHeldForSaleTransfers
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of assets held-for-sale that are not part of a disposal group. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 15 -Paragraph 4 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482309/360-10-15-4 + Details
Name: | us-gaap_AssetsHeldForSaleNotPartOfDisposalGroup
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=tdw_VesselsHeldForSaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |