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INVENTORIES (Tables)
6 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventories Inventories consist of the following (in thousands):
September 30,
2020
March 31,
2020
Raw materials$16,267 $15,311 
Work in process125 819 
Finished goods6,057 5,376 
Deferred costs3,774 721 
$26,223 $22,227