Derivative Financial Instruments (Balance Sheet Category and Fair Values of Derivative Instruments (Not Designated as Hedging Instruments)) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	$ 1,900,000	$ 0
Counterparties
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	0	770,000
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	0	35,000
Not Designated as Hedging Instrument | Other Assets | Interest rate lock commitments (mortgage)
Assets:
Notional Amount, Asset	20,356,000	22,451,000
Fair Value	681,000	725,000
Not Designated as Hedging Instrument | Other Assets | Forward commitments
Assets:
Notional Amount, Asset	16,000,000	0
Fair Value	15,000	0
Not Designated as Hedging Instrument | Other Assets | Undesignated interest rate swaps
Assets:
Notional Amount, Asset	0	2,231,000
Fair Value	0	54,000
Not Designated as Hedging Instrument | Other Liabilities | Forward commitments
Liabilities:
Notional Amount, Liability	36,500,000	51,500,000
Fair Value	(113,000)	(399,000)
Not Designated as Hedging Instrument | Other Liabilities | Undesignated interest rate swaps
Liabilities:
Notional Amount, Liability	9,627,000	11,266,000
Fair Value	(465,000)	$ (453,000)
Not Designated as Hedging Instrument | Counterparties
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	$ 0