Schedule of Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Other Assets, Accrued Expenses, Other Current Liabilities, And Other Liabilities And Deferred Credits [Abstract]
Payroll and related payables	$ 32,041	$ 27,248
Commissions payable	8,282us-gaap_AccruedSalesCommissionCurrent	8,263us-gaap_AccruedSalesCommissionCurrent
Accrued vessel expenses	79,549tdw_AccruedVesselExpenses	96,468tdw_AccruedVesselExpenses
Accrued interest expense	14,514us-gaap_InterestPayableCurrent	14,816us-gaap_InterestPayableCurrent
Other accrued expenses	11,869us-gaap_OtherAccruedLiabilitiesCurrent	10,507us-gaap_OtherAccruedLiabilitiesCurrent
Accrued expenses	$ 146,255us-gaap_AccruedLiabilitiesCurrent	$ 157,302us-gaap_AccruedLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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