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PROPERTY, PLANT AND EQUIPMENT (Tables)
12 Months Ended
Jun. 30, 2020
Property, Plant and Equipment [Abstract]  
Property, plant and equipment
At June 30, 2020 and 2019, property, plant and equipment consisted of the following (in thousands):
  June 30,
Useful Life 20202019
Furniture and fixtures
3 to 5 years
$245 $245 
Plant and equipment
3 to 17 years
9,053 8,683 
Manufacturing
15 years
169 169 
Computers and software
3 to 5 years
2,132 2,179 
Leasehold improvementsLife of Lease3,192 2,792 
Land 19 19 
Construction-in-progress 3,507 275 
  18,317 14,362 
Less: accumulated depreciation 9,190 8,495 
Net property, plant and equipment $9,127 $5,867