XML 81 R64.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Summary of Components Included in Reorganization Items (Detail) - USD ($) $ in Thousands | 4 Months Ended | 5 Months Ended
--- | --- | ---
Jul. 31, 2017 | Dec. 31, 2017
Reorganizations [Line Items] |  |
Debt, sale leaseback and other reorganization items |  | $ 1,631
Reorganization-related professional fees |  | 2,668
Loss on reorganization items |  | $ 4,299
Predecessor |  |
Reorganizations [Line Items] |  |
Gain on settlement of Liabilities subject to compromise | $ (767,640) |
Fresh start adjustments | 1,820,018 |
Debt, sale leaseback and other reorganization items | 316,504 |
Reorganization-related professional fees | 28,023 |
Loss on reorganization items | $ 1,396,905 |

X
- Definition Debt sale leaseback and other reorganization items. + References No definition available. + Details
Name: | tdw_DebtSaleLeasebackAndOtherReorganizationItems
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Gain on settlement of liabilities subject to compromise. + References No definition available. + Details
Name: | tdw_GainOnSettlementOfLiabilitiesSubjectToCompromise
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Reorganizations. + References No definition available. + Details
Name: | tdw_ReorganizationsLineItems
Namespace Prefix: | tdw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=114872137&loc=d3e55730-112764 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56145-112766 + Details
Name: | us-gaap_DebtorReorganizationItemsLegalAndAdvisoryProfessionalFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount recognized from the revaluation of assets and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56145-112766 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=114872137&loc=d3e55730-112764 + Details
Name: | us-gaap_DebtorReorganizationItemsRevaluationOfAssetsAndLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total amount of reorganization items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56145-112766 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=114872137&loc=d3e55730-112764 + Details
Name: | us-gaap_ReorganizationItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementScenarioAxis=us-gaap_PredecessorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |