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PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
PROPERTY, PLANT AND EQUIPMENT    
Total $ 29,757 $ 27,165
Less accumulated depreciation (7,141) (6,127)
Total property, plant and equipment 22,616 21,038
Depreciation expense 1,013 929
Cost of product sales    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation expense 409 370
Land    
PROPERTY, PLANT AND EQUIPMENT    
Total 12,968 11,659
Buildings and leasehold improvements    
PROPERTY, PLANT AND EQUIPMENT    
Total 10,700 10,059
Vehicles    
PROPERTY, PLANT AND EQUIPMENT    
Total 1,664 1,580
Machinery and equipment    
PROPERTY, PLANT AND EQUIPMENT    
Total 4,127 3,653
Furniture and fixtures    
PROPERTY, PLANT AND EQUIPMENT    
Total $ 298 $ 214