XML 37 R61.htm IDEA: XBRL DOCUMENT v3.2.0.727

Summary of Gain on Assets Disposition (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Fair Value Measurements [Line Items]
Amount of impairment incurred	$ 14,958	$ 950
Combined fair value of assets incurring impairment	$ 46,855	$ 220

X

- Definition

Assets Fair Value Disclosure 1

+ References

No definition available.

+ Details

Name:	tdw_AssetsFairValueDisclosure1
Namespace Prefix:	tdw_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Fair Value Measurements [Line Items]

+ References

No definition available.

+ Details

Name:	tdw_FairValueMeasurementsLineItems
Namespace Prefix:	tdw_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 360



-SubTopic 10



-Section 45



-Paragraph 4



-URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2420-110228



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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 230



-SubTopic 10



-Section 45



-Paragraph 28



-Subparagraph (b)



-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration