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Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Components of Property, Plant and Equipment      
Property, plant and equipment, gross $ 132,015 $ 124,414  
Accumulated depreciation (60,715) (54,355)  
Property, plant and equipment, net 71,300 70,059  
Depreciation expense 8,000 8,500 $ 8,800
Land      
Components of Property, Plant and Equipment      
Property, plant and equipment, gross 550 550  
Building      
Components of Property, Plant and Equipment      
Property, plant and equipment, gross 29,046 27,180  
Machinery      
Components of Property, Plant and Equipment      
Property, plant and equipment, gross 48,390 45,371  
Computer equipment      
Components of Property, Plant and Equipment      
Property, plant and equipment, gross 25,245 24,449  
Furniture and fixtures      
Components of Property, Plant and Equipment      
Property, plant and equipment, gross 3,238 3,256  
Leasehold improvements      
Components of Property, Plant and Equipment      
Property, plant and equipment, gross 9,080 9,071  
Construction in progress      
Components of Property, Plant and Equipment      
Property, plant and equipment, gross $ 16,466 $ 14,537