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Product Warranty - Change in the Company's Warranty Accrual (Detail) - USD ($)
$ in Thousands
6 Months Ended
Sep. 30, 2015
Oct. 03, 2014
Movement in Standard Product Warranty Accrual [Roll Forward]    
Balance, beginning of period $ 15,545 $ 17,023
Change in liability for warranties issued in period 1,614 3,072
Settlements made (in cash or in kind) during the period (4,178) (3,954)
Balance, end of period $ 12,981 $ 16,141