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LEASES - Maturities of Operating Lease Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Leases [Abstract]    
2021 $ 723  
2022 970  
2023 983  
2024 865  
2025 841  
2026 and thereafter 4,426  
Total minimum lease payments 8,808  
Less: amount representing interest (1,346)  
Operating lease liabilities $ 7,462 $ 7,264