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INVENTORIES (Tables)
6 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Schedule of Inventories Inventories consist of the following (in thousands):

September 30,
2019
 
March 31,
2019
Raw materials
$
16,848

 
$
14,432

Work in process
274

 
1,181

Finished goods
4,950

 
7,738

Deferred costs
4,123

 
2,919


$
26,195

 
$
26,270