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
Components of inventories    
Raw materials $ 1,841 $ 2,188
Finished goods 3,901 4,619
Total inventories $ 5,742 $ 6,807