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DETAILS OF CERTAIN BALANCE SHEET ACCOUNTS - Warranty Obligation (Details) - USD ($)
$ in Thousands
6 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Changes in the Warranty Obligation [Roll Forward]    
Warranty obligation at beginning of period $ 15,261 $ 17,984
Warranty provision related to products shipped 13,488 9,573
Deductions for warranty claims processed (7,981) (9,841)
Adjustments related to preexisting warranties (2,365) (1,916)
Warranty obligation at end of period $ 18,403 $ 15,800