Financial Instruments With Off-Balance Sheet Risk (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Financial instruments with off-balance sheet risk (Textual)
Commitment under letters of credit	$ 8.7	$ 9.9
Commitments To Extend Credit [Member]
Financial instruments with off-balance sheet risk (Textual)
Amount of unfunded commitments to extend credit	480.1	426.6
Unfunded commitments to extend credit at fixed rate	114.6	105.0
Unfunded commitments to extend credit at variable rate	$ 365.5	$ 321.6