XML 56 R45.htm IDEA: XBRL DOCUMENT v3.3.0.814

Schedule of Carrying Value of Trust Assets, Including Unrealized Gains or Losses (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Mar. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Investments held in Rabbi Trust	$ 9,136	$ 9,915
Unrealized gains (losses) in fair value of trust assets	444	235
Obligations under the supplemental plan	$ 26,599	$ 25,510

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, 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

+ Details

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

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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