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Schedule of Tax Rate Applicable to Pre-Tax Earning, U.S. Federal Statutory Rate (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Reconciliation of Statutory Federal Tax Rate [Line Items]
Computed "expected" tax expense	$ 60,567	$ 68,307	$ 38,863
Resolution of uncertain tax positions			(4,187)
Foreign income taxed at different rates	(18,536)	(23,965)	(13,504)
Foreign tax credits not previously recognized	(483)	(398)	(626)
Expenses which are not deductible for tax purposes	3,661	498	2,889
Reversal of basis difference - sale leaseback	(3,369)
Valuation allowance - foreign tax credits	(5,821)	5,821
Amortization of deferrals associated with intercompany sales to foreign tax jurisdictions	(1,475)	(6,232)	326
Expenses which are not deductible for book purposes	(2,144)
State taxes	3	(203)	(363)
Other, net	390	585	227
Income tax expense (benefit), Total	$ 32,793	$ 44,413	$ 23,625

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Sale Leaseback Transaction Transfer Taxes

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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