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INVENTORIES
9 Months Ended
Dec. 31, 2017
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):

December 31,
2017
 
March 31,
2017
Raw materials
$
23,039

 
$
22,305

Work in process
484

 
998

Finished goods and deferred costs
13,069

 
16,699


$
36,592

 
$
40,002