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Components of Property and Equipment (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Mar. 31, 2020
Property Plant And Equipment [Abstract]    
Land $ 7,658 $ 7,179
Building and building improvements 105,602 100,176
Leasehold improvements 15,187 14,546
Machinery, equipment and computer software 85,654 71,636
Furniture and fixtures 15,303 14,600
Construction in progress 26,321 15,075
Total cost 255,725 223,212
Accumulated depreciation (76,361) (58,281)
Property and equipment, net $ 179,364 $ 164,931