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

June 30,
2019
 
March 31,
2019
Raw materials
$
18,825

 
$
14,432

Work in process
410

 
1,181

Finished goods
6,228

 
7,738

Deferred costs
1,016

 
2,919


$
26,479

 
$
26,270