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Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Mar. 31, 2020
Inventory Disclosure [Abstract]    
Packaging and raw materials $ 8,370 $ 9,803
Work in process 321 355
Finished goods 108,320 105,868
Inventories 117,011 116,026
Inventory valuation reserves related to obsolete and slow-moving inventory $ 4,100 $ 6,500