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INVENTORIES (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Mar. 31, 2021
Inventory Disclosure [Abstract]    
Raw materials $ 15,363 $ 13,189
Work in process 148 16
Finished goods 4,019 6,168
Deferred costs 1,311 3,440
Total inventories $ 20,841 $ 22,813