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Property and Equipment - Additional Information (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Property, Plant and Equipment [Abstract]      
Depreciation and amortization expense $ 10,228 $ 11,415 $ 12,060
Depreciation expense allocated to cost of goods sold $ 1,250 $ 1,250 $ 1,250