Financial Instruments With Off-Balance Sheet Risk (Summary of the Contract Amounts of the Bank's Exposure to Off-Balance Sheet Risk) (Details) - Commitments with Off-Balance Sheet Risk [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Commitments with off-balance sheet risk:
Total commitments with off-balance sheet risk	$ 225,241	$ 210,111
Commitments to Extend Credit [Member]
Commitments with off-balance sheet risk:
Total commitments with off-balance sheet risk	210,086	204,831
Standby Letters of Credit [Member]
Commitments with off-balance sheet risk:
Total commitments with off-balance sheet risk	$ 15,155	$ 5,280