Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Derivative Instruments - Schedule of Total Outstanding Notional Amount and Fair Value of Derivative Instruments (Detail)

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Derivative Instruments - Schedule of Total Outstanding Notional Amount and Fair Value of Derivative Instruments (Detail) - USD ($)
Mar. 31, 2016
Mar. 31, 2015
Derivatives, Fair Value [Line Items]    
Notional Amount $ 100,400,000 $ 128,600,000
Derivative Assets 0 0
Derivative Liabilities 3,700,000 3,300,000
Derivatives Not Accounted for As Hedges [Member] | Foreign Currency Forward Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Notional Amount 400,000 3,600,000
Derivative Assets 0 0
Derivative Liabilities   200,000
Derivatives Not Accounted for As Hedges [Member] | Interest Rate Swap Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Notional Amount 100,000,000 125,000,000
Derivative Assets 0 0
Derivative Liabilities $ 3,700,000 $ 3,100,000