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Derivatives (Details) - Summary of interest rate swap designated as a cash flow hedges - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]      
Notional amount $ 175,000 $ 175,000 $ 150,000
Weighted average pay rates 1.69% 1.83% 1.82%
Weighted average receive rates 1.03% 2.53% 2.37%
Weighted average maturity 1 year 1 month 6 days 1 year 6 months 1 year 6 months
Fair value $ (2,728) $ (380) $ (273)