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INVENTORIES
12 Months Ended
Mar. 31, 2021
Inventory Disclosure [Abstract]  
INVENTORIES INVENTORIES
Inventories are stated at the lower of actual cost or net realizable value. Cost is determined by using the FIFO method. Inventories consisted of the following (in thousands):
 March 31,
 20212020
Raw materials$13,189 $15,311 
Work in process16 819 
Finished goods6,168 5,376 
Deferred costs3,440 721 
$22,813 $22,227