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COMMITMENTS AND CONTINGENCIES - Leases (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Leases        
Operating lease, term of contract (in years) 10 years   10 years  
Rent expense $ 135 $ 139 $ 423 $ 403
Sublease rental income 90 $ 86 264 $ 272
Future minimum lease commitments        
2020 148   148  
2021 505   505  
2022 435   435  
2023 422   422  
2024 314   314  
Thereafter 808   808  
Total $ 2,632   $ 2,632  
Minimum        
Leases        
Sublease, term of contract (in years)     3 years  
Maximum        
Leases        
Sublease, term of contract (in years)     11 years