XML 81 R67.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Schedule of Tax Benefit from Stock Benefit Transactions (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Income Tax Disclosure [Abstract] |  |  |
Excess tax benefits on stock benefit transactions | $ (1,605) | $ (1,784) | $ 301

X
- Definition Deferred tax expense benefit from stock options exercised. + References No definition available. + Details
Name: | tdw_DeferredTaxExpenseBenefitFromStockOptionsExercised
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration