XML 22 R46.htm IDEA: XBRL DOCUMENT v2.4.1.9

Schedule of Carrying Value of Trust Assets, Including Unrealized Gains or Losses (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Mar. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Investments held in Rabbi Trust	$ 10,023us-gaap_DeferredCompensationPlanAssets	$ 10,285us-gaap_DeferredCompensationPlanAssets
Unrealized gains in fair value of trust assets	263tdw_TrustAssetsCarryingValueNet	92tdw_TrustAssetsCarryingValueNet
Unrealized gains in fair value of trust assets are net of income tax expense of	92tdw_TrustAssetsCarryingValueIncomeTaxExpense	49tdw_TrustAssetsCarryingValueIncomeTaxExpense
Obligations under the supplemental plan	$ 23,229tdw_DefinedBenefitPlanSupplementalPlanObligations	$ 21,918tdw_DefinedBenefitPlanSupplementalPlanObligations

X

- Definition

Defined Benefit Plan Supplemental Plan Obligations

+ References

No definition available.

+ Details

Name:	tdw_DefinedBenefitPlanSupplementalPlanObligations
Namespace Prefix:	tdw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Trust assets, carrying value, income tax expense

+ References

No definition available.

+ Details

Name:	tdw_TrustAssetsCarryingValueIncomeTaxExpense
Namespace Prefix:	tdw_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Trust assets, carrying value, net

+ References

No definition available.

+ Details

Name:	tdw_TrustAssetsCarryingValueNet
Namespace Prefix:	tdw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

+ Details

Name:	us-gaap_DeferredCompensationPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

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