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

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- Definition The number of derivative instruments of a particular group held by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959 + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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