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PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
PROPERTY, PLANT AND EQUIPMENT    
Total $ 27,165 $ 22,338
Less accumulated depreciation (6,127) (5,210)
Total property, plant and equipment 21,038 17,128
Depreciation expense 929 838
Cost of product sales    
PROPERTY, PLANT AND EQUIPMENT    
Depreciation expense 370 306
Land    
PROPERTY, PLANT AND EQUIPMENT    
Total 11,659 8,081
Buildings and leasehold improvements    
PROPERTY, PLANT AND EQUIPMENT    
Total 10,059 9,234
Vehicles    
PROPERTY, PLANT AND EQUIPMENT    
Total 1,580 1,477
Machinery and equipment    
PROPERTY, PLANT AND EQUIPMENT    
Total 3,653 3,385
Furniture and fixtures    
PROPERTY, PLANT AND EQUIPMENT    
Total $ 214 $ 161