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Leases - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
Capital Leased Assets [Line Items] |  |  |
Operating leases expense | $ 596 us-gaap_OperatingLeasesRentExpenseNet | $ 563 us-gaap_OperatingLeasesRentExpenseNet | $ 513 us-gaap_OperatingLeasesRentExpenseNet
Machinery and Equipment [Member] |  |  |
Capital Leased Assets [Line Items] |  |  |
Amortization of machinery and equipment under capital leases | $ 54 us-gaap_CapitalLeasesIncomeStatementAmortizationExpense / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember | $ 72 us-gaap_CapitalLeasesIncomeStatementAmortizationExpense / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember | $ 84 us-gaap_CapitalLeasesIncomeStatementAmortizationExpense / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_MachineryAndEquipmentMember

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- Details
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- Definition The charge for the use of long-lived depreciable capital leased assets for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45031-112735 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 840 -Section 55 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501752&loc=d3e56872-110439 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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Balance Type: |
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