Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Mar. 31, 2020
Inventory Disclosure [Abstract]    
Raw materials $ 38,009 $ 31,300
Work in process 3,867 5,317
Finished goods 34,055 25,701
Inventories, gross 75,931 62,318
Valuation reserves (1,778) (2,045)
Inventories, net $ 74,153 $ 60,273