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Inventories - Summary of Determination Cost of Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Inventory Disclosure [Abstract]    
Finished and in-process products $ 43,458 $ 42,304
Raw materials and supplies 26,390 23,615
Inventory net $ 69,848 $ 65,919