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

Commitments and Contingencies - Additional Information (Detail)

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Commitments and Contingencies - Additional Information (Detail) - USD ($)
12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]      
Net of estimated recoveries from third-party $ 1,100,000 $ 1,800,000  
Rental expense 18,400,000 $ 16,900,000 $ 16,700,000
Acquisition of plant and equipment and other purchase obligations $ 0