Annual report pursuant to Section 13 and 15(d)

Financial Instruments and Derivative Financial Instruments - Additional Information (Detail)

v2.4.1.9
Financial Instruments and Derivative Financial Instruments - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Mar. 31, 2014
Concentration Risk [Line Items]    
Letters of credit outstanding, amount $ 10,903us-gaap_LettersOfCreditOutstandingAmount $ 15,473us-gaap_LettersOfCreditOutstandingAmount
Foreign Exchange [Member]    
Concentration Risk [Line Items]    
Number of foreign exchange contracts held by the company 0us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_TradingActivityByTypeAxis
= us-gaap_ForeignExchangeMember
0us-gaap_DerivativeNumberOfInstrumentsHeld
/ us-gaap_TradingActivityByTypeAxis
= us-gaap_ForeignExchangeMember