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Derivative Financial Instruments (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2021
USD ($)
agreement
Dec. 31, 2020
USD ($)
agreement
Swap agreements    
Derivative Financial Instruments    
Number of swap agreements outstanding not included in the offsetting | agreement 21 21
Collateralized amount $ 8,700 $ 14,000
Receive Fixed/Pay Variable Swaps    
Derivative Financial Instruments    
Notional amount 97,431 97,658
Fair Value, Liability 7,809 13,633
Pay Fixed/Receive Variable Swaps    
Derivative Financial Instruments    
Notional amount 97,431 97,658
Fair Value, Asset $ (7,809) $ (13,633)