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LEASES - Future Minimum Payments for Leases (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Lessee, Operating Lease, Liability, Payment, Due, Rolling Maturity [Abstract]    
September 30, 2022 $ 1,314  
September 30, 2023 1,318  
September 30, 2024 1,319  
September 30, 2025 1,125  
September 30, 2026 1,032  
Thereafter 4,301  
Total future minimum lease payments 10,409  
Amounts representing interest (568)  
Operating lease liabilities $ 9,841 $ 10,627