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INVENTORY
 3 Months Ended
Jun. 30, 2020
Inventory Disclosure [Abstract]  
INVENTORY INVENTORY
Inventory balances by category were as follows:
 June 30, 2020March 31, 2020
Finished products$18,039  $17,984  
Parts and supplies1,447  1,124  
Inventory$19,486  $19,108  
Estimated product returns included in inventory at June 30, 2020 and March 31, 2020 were $541 and $506, respectively.