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INVENTORY (Tables)
 3 Months Ended
Jun. 30, 2017
Inventory Disclosure [Abstract]  
Inventory balances by category
Inventory balances by category are as follows:
 
June 30, 2017
 
March 31, 2017
Finished products
$
10,819

 
$
15,530

Parts and supplies
817

 
793

Inventory
$
11,636

 
$
16,323