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LEASES - Lease Obligations - Minimum Future Rental Payments from Operating Leases (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Leases [Abstract]    
2020 $ 3,422  
2021 2,153  
2022 0  
2023 0  
2024 0  
Thereafter 0  
Total lease payments 5,575  
Imputed interest (195)  
Present value of lease liability $ 5,380 $ 0