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INVENTORIES
 6 Months Ended
Sep. 30, 2020
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories are stated at the lower of actual cost or net realizable value. Cost is determined by using the first in, first out (FIFO) method. 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