Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Mar. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 35,111 $ 32,892
Work in process 5,024 5,696
Finished goods 25,602 28,501
Inventories, gross 65,737 67,089
Valuation reserves (1,948) (2,199)
Inventories, net $ 63,789 $ 64,890