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v2.4.1.9

Details of Number of Vessels, Total Proceeds, Carrying Values at the Time of Sale, Deferred Gains Recognized, Lease Expirations, and Contractual Purchase Option (Detail) (USD $) In Thousands, unless otherwise specified | 1 Months Ended | 3 Months Ended | 12 Months Ended
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Mar. 31, 2015 Vessel | Mar. 31, 2014 Vessel | Jul. 31, 2009 Vessel | Jun. 30, 2009 Vessel | Mar. 31, 2006 | Mar. 31, 2015 Vessel | Dec. 31, 2014 Vessel | Sep. 30, 2014 Vessel | Jun. 30, 2014 Vessel | Mar. 31, 2014 Vessel | Dec. 31, 2013 Vessel | Sep. 30, 2013 Vessel | Mar. 31, 2015 Vessel | Mar. 31, 2014 Vessel | Mar. 31, 2010
Sale Leaseback Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Vessels | 2 tdw_SaleLeasebackTransactionNumberOfVessels | 3 tdw_SaleLeasebackTransactionNumberOfVessels | 6 tdw_SaleLeasebackTransactionNumberOfVessels | 6 tdw_SaleLeasebackTransactionNumberOfVessels |  | 1 tdw_SaleLeasebackTransactionNumberOfVessels | 3 tdw_SaleLeasebackTransactionNumberOfVessels | 1 tdw_SaleLeasebackTransactionNumberOfVessels | 1 tdw_SaleLeasebackTransactionNumberOfVessels | 4 tdw_SaleLeasebackTransactionNumberOfVessels | 4 tdw_SaleLeasebackTransactionNumberOfVessels | 2 tdw_SaleLeasebackTransactionNumberOfVessels | 6 tdw_SaleLeasebackTransactionNumberOfVessels | 10 tdw_SaleLeasebackTransactionNumberOfVessels |
Total Proceeds |  |  |  |  | $ 76,500 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 13,000 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 78,200 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 19,350 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 13,400 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 63,305 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 141,900 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 65,550 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 123,950 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 270,755 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities | $ 101,800 us-gaap_SaleLeasebackTransactionGrossProceedsInvestingActivities
Carrying Value at time of Sale |  |  |  |  |  | 5,115 tdw_SaleLeasebackTransactionClosingCosts | 33,233 tdw_SaleLeasebackTransactionClosingCosts | 8,214 tdw_SaleLeasebackTransactionClosingCosts | 4,002 tdw_SaleLeasebackTransactionClosingCosts | 32,845 tdw_SaleLeasebackTransactionClosingCosts | 105,649 tdw_SaleLeasebackTransactionClosingCosts | 34,325 tdw_SaleLeasebackTransactionClosingCosts | 50,564 tdw_SaleLeasebackTransactionClosingCosts | 172,819 tdw_SaleLeasebackTransactionClosingCosts |
Deferred Gain at time of Sale |  |  |  |  |  | $ 7,885 tdw_SaleLeasebackTransactionDeferredGainCurrent | $ 44,967 tdw_SaleLeasebackTransactionDeferredGainCurrent | $ 11,136 tdw_SaleLeasebackTransactionDeferredGainCurrent | $ 9,398 tdw_SaleLeasebackTransactionDeferredGainCurrent | $ 30,460 tdw_SaleLeasebackTransactionDeferredGainCurrent | $ 36,251 tdw_SaleLeasebackTransactionDeferredGainCurrent | $ 31,225 tdw_SaleLeasebackTransactionDeferredGainCurrent | $ 73,386 tdw_SaleLeasebackTransactionDeferredGainCurrent | $ 97,936 tdw_SaleLeasebackTransactionDeferredGainCurrent |
Lease Term in Years |  |  |  |  |  | 7 years |  | 8 years 6 months | 7 years |  |  | 7 years |  |  |
Purchase Option Percentage |  |  |  |  |  | 50.00%tdw_SaleLeasebackTransactionPercentageOfPurchaseOption | 60.00%tdw_SaleLeasebackTransactionPercentageOfPurchaseOption | 47.00%tdw_SaleLeasebackTransactionPercentageOfPurchaseOption | 61.00%tdw_SaleLeasebackTransactionPercentageOfPurchaseOption |  |  | 55.00%tdw_SaleLeasebackTransactionPercentageOfPurchaseOption |  |  |
Purchase Option at end of: |  |  |  |  |  | 6thYear | 7th or 8th Year | 8thYear | 6th Year | 6th or 9th Year | 6th or 8th Year | 6th Year |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease Term in Years |  |  |  |  |  |  | 8 years |  |  | 7 years | 7 years |  |  |  |
Purchase Option Percentage |  |  |  |  |  |  |  |  |  | 53.00%tdw_SaleLeasebackTransactionPercentageOfPurchaseOption / us-gaap_RangeAxis = us-gaap_MinimumMember | 54.00%tdw_SaleLeasebackTransactionPercentageOfPurchaseOption / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sale Leaseback Transaction [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease Term in Years |  |  |  |  |  |  | 9 years |  |  | 10 years | 9 years |  |  |  |
Purchase Option Percentage |  |  |  |  |  |  |  |  |  | 59.00%tdw_SaleLeasebackTransactionPercentageOfPurchaseOption / us-gaap_RangeAxis = us-gaap_MaximumMember | 68.00%tdw_SaleLeasebackTransactionPercentageOfPurchaseOption / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |

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- Definition Sale Leaseback Transaction closing costs + References No definition available. + Details
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- Definition Sale Leaseback Transaction Deferred Gain Current + References No definition available. + Details
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- Definition Sale Leaseback Transaction, Expiration Date + References No definition available. + Details
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- Definition Sale Leaseback Transaction Percentage of Purchase Option + References No definition available. + Details
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- Definition Sale Leaseback Transaction Term + References No definition available. + Details
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- Definition Amount of cash inflow before closing and deferred financing costs received by a seller-lessee in a sale-leaseback recognized in investing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 51 -URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51840-112757 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51831-112757 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=28365400&loc=d3e51843-112757 + Details
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