XML 35 R52.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Commitments and Contingencies - Additional Information (Detail) $ in Millions | 1 Months Ended | 3 Months Ended |  |
--- | --- | --- | --- | ---
May. 31, 2015 USD ($) Vessel | Apr. 30, 2015 USD ($) Vessel | Jun. 30, 2015 USD ($) Vessel T W | Jul. 31, 2015 USD ($) | Mar. 31, 2015 USD ($)
Significant Purchase and Supply Commitment [Line Items] |  |  |  |  |
Number of Vessels, commitments | Vessel |  |  | 16 |  |
Vessels Under Construction |  |  |  |  |
Significant Purchase and Supply Commitment [Line Items] |  |  |  |  |
Number of Vessels, commitments | Vessel |  | 6 |  |  |
Number of terminated contracts | Vessel |  | 3 |  |  |
Aggregate installment payment |  | $ 36.1 |  |  | $ 0.8
Aggregate estimated remaining cost |  | $ 12.7 |  |  |
Accrued interest owing on the returned installments |  |  | $ 3.5 |  |
Installment payment returned |  |  | 24.2 |  |
Impairment charge on amounts not recoverable |  |  | $ 0.8 |  |
Subsequent Event | Vessels Under Construction |  |  |  |  |
Significant Purchase and Supply Commitment [Line Items] |  |  |  |  |
Installment payment returned |  |  |  | $ 12.0 |
Towing Supply Vessels |  |  |  |  |
Significant Purchase and Supply Commitment [Line Items] |  |  |  |  |
Significant commitment, new construction brake horsepower | W |  |  | 7,145 |  |
Deepwater PSVs |  |  |  |  |
Significant Purchase and Supply Commitment [Line Items] |  |  |  |  |
Significant commitment, new construction deadweight tons capacity range, low | T |  |  | 4,200 |  |
Significant commitment, new construction deadweight tons capacity range, high | T |  |  | 6,000 |  |
Significant commitment, new construction final delivery date |  |  | April 2017 |  |
Aggregate installment payment | $ 5.4 |  |  |  | $ 1.0
Number of vessels under construction | Vessel | 2 |  |  |  |
Significant commitment, new construction delivery date | Jun. 30, 2016 |  |  |  |
Obligation to be relieved | $ 21.7 |  |  |  |
Fast, Crew/Supply Boat |  |  |  |  |
Significant Purchase and Supply Commitment [Line Items] |  |  |  |  |
Impairment charge on amounts not recoverable |  |  | $ 2.4 |  |
Number of vessels under construction | Vessel |  |  | 1 |  |
Insurance coverage for the progress payments made on the vessel by the third party credit support |  |  | 90.00% |  |
Insurance coverage by the third party credit support for the carrying value of the accumulated costs |  |  | $ 2.4 |  |
Fast, Crew/Supply Boat | Reclassification of Construction in Progress to Other Non-Current Assets |  |  |  |  |
Significant Purchase and Supply Commitment [Line Items] |  |  |  |  |
Committed and invested amount, remaining |  |  | $ 5.6 |  |

X
- Definition Accrued Interest Receivable On Returned Installments + References No definition available. + Details
Name: | tdw_AccruedInterestReceivableOnReturnedInstallments
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Commitments And Contingencies Carrying Value Of Accumulated Costs + References No definition available. + Details
Name: | tdw_CommitmentsAndContingenciesCarryingValueOfAccumulatedCosts
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Commitments And Contingencies Percentage Of Third Party Credit + References No definition available. + Details
Name: | tdw_CommitmentsAndContingenciesPercentageOfThirdPartyCredit
Namespace Prefix: | tdw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Funded Investment Commitments Remaining + References No definition available. + Details
Name: | tdw_FundedInvestmentCommitmentsRemaining
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Impairment Charge On Payments Invested Not Recoverable + References No definition available. + Details
Name: | tdw_ImpairmentChargeOnPaymentsInvestedNotRecoverable
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of Contracts Terminated + References No definition available. + Details
Name: | tdw_NumberOfContractsTerminated
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant commitment, new construction brake horsepower. + References No definition available. + Details
Name: | tdw_SignificantCommitmentNewConstructionBrakeHorsepower
Namespace Prefix: | tdw_
Data Type: | xbrli:positiveIntegerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Significant Commitment New Construction Dead Weight Tons Capacity Range High + References No definition available. + Details
Name: | tdw_SignificantCommitmentNewConstructionDeadWeightTonsCapacityRangeHigh
Namespace Prefix: | tdw_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition Significant Commitment New Construction Dead Weight Tons Capacity Range Low + References No definition available. + Details
Name: | tdw_SignificantCommitmentNewConstructionDeadWeightTonsCapacityRangeLow
Namespace Prefix: | tdw_
Data Type: | num:massItemType
Balance Type: | na
Period Type: | instant

X
- Definition Significant Commitment Number Of Vessel + References No definition available. + Details
Name: | tdw_SignificantCommitmentNumberOfVessel
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Significant commitment projected delivery date range. + References No definition available. + Details
Name: | tdw_SignificantCommitmentProjectedDeliveryDateRange
Namespace Prefix: | tdw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant Commitment Remaining Balance Of Vessel Under Construction + References No definition available. + Details
Name: | tdw_SignificantCommitmentRemainingBalanceOfVesselUnderConstruction
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Significant Commitments, New Construction + References No definition available. + Details
Name: | tdw_SignificantCommitmentsNewConstruction
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant Commitments, New Construction Progress Payments Invested + References No definition available. + Details
Name: | tdw_SignificantCommitmentsNewConstructionProgressPaymentsInvested
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Significant Commitments New Construction Progress Return Of Payments Invested + References No definition available. + Details
Name: | tdw_SignificantCommitmentsNewConstructionProgressReturnOfPaymentsInvested
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Significant Purchase and Supply Commitment [Line Items] + References No definition available. + Details
Name: | tdw_SignificantPurchaseAndSupplyCommitmentLineItems
Namespace Prefix: | tdw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant Supply Commitment, Expiration Date + References No definition available. + Details
Name: | tdw_SignificantSupplyCommitmentExpirationDate
Namespace Prefix: | tdw_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Decrease for amounts of indebtedness forgiven by the holder of the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_DebtInstrumentDecreaseForgiveness
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis=tdw_VesselsUnderConstructionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tdw_SignificantPurchaseAndSupplyCommitmentAxis=tdw_TowingSupplyAndSupplyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tdw_SignificantPurchaseAndSupplyCommitmentAxis=tdw_DeepwaterPlatformSupplyVesselsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tdw_SignificantPurchaseAndSupplyCommitmentAxis=tdw_FastCrewSupplyBoatMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | tdw_ReclassificationFromAxis=tdw_ReclassificationFromConstructionInProgressToOtherAssetsNoncurrentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |