Derivative Financial Instruments (Balance Sheet Category and Fair Values of Derivative Instruments (Not Designated as Hedging Instruments)) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	$ 0	$ 1,200,000
Liabilities:
Notional Amount, Liability	15,064,000
Counterparties
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	770,000	0
Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	35,000	20,000
Not Designated as Hedging Instrument | Other Assets | Interest rate lock commitments (mortgage)
Assets:
Notional Amount, Asset	22,451,000	53,588,000
Fair Value	725,000	1,738,000
Not Designated as Hedging Instrument | Other Assets | Forward commitments
Assets:
Notional Amount, Asset	0	37,286,000
Fair Value	0	80,000
Not Designated as Hedging Instrument | Other Assets | Undesignated interest rate swaps
Assets:
Notional Amount, Asset	2,231,000
Fair Value	54,000
Not Designated as Hedging Instrument | Other Liabilities | Forward commitments
Liabilities:
Notional Amount, Liability	51,500,000	118,632,000
Fair Value	(399,000)	(232,000)
Not Designated as Hedging Instrument | Other Liabilities | Undesignated interest rate swaps
Liabilities:
Notional Amount, Liability	11,266,000	14,045,000
Fair Value	(453,000)	(738,000)
Not Designated as Hedging Instrument | Counterparties
Derivatives, Fair Value [Line Items]
Cash pledged as collateral	$ 0	$ 29,000