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PROPERTY AND EQUIPMENT - Additional information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Property, Plant and Equipment        
Depreciation     $ 1,025 $ 1,094
Property and Equipment [Member]        
Property, Plant and Equipment        
Depreciation $ 200 $ 200 400 300
Leased devices        
Property, Plant and Equipment        
Depreciation $ 400 400 $ 700 600
Product Demo Units        
Property, Plant and Equipment        
Depreciation   $ 100   $ 200