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PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
PROPERTY, PLANT AND EQUIPMENT          
Total $ 27,948   $ 27,948   $ 27,165
Less accumulated depreciation (6,628)   (6,628)   (6,127)
Total property, plant and equipment 21,320   21,320   21,038
Depreciation expense 252 $ 253 501 $ 494  
Cost of product sales          
PROPERTY, PLANT AND EQUIPMENT          
Depreciation expense 98 $ 91 203 $ 181  
Land          
PROPERTY, PLANT AND EQUIPMENT          
Total 11,671   11,671   11,659
Buildings and leasehold improvements          
PROPERTY, PLANT AND EQUIPMENT          
Total 10,422   10,422   10,059
Vehicles          
PROPERTY, PLANT AND EQUIPMENT          
Total 1,663   1,663   1,580
Machinery and equipment          
PROPERTY, PLANT AND EQUIPMENT          
Total 3,894   3,894   3,653
Furniture and fixtures          
PROPERTY, PLANT AND EQUIPMENT          
Total $ 298   $ 298   $ 214