Derivative Financial Instruments (Loan Swaps) (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Cash pledged as collateral	$ 1,900,000	$ 0
Other Assets
Derivative [Line Items]
Notional Amount	9,627,000	11,266,000
Other Liabilities
Derivative [Line Items]
Notional Amount	0	2,231,000
Back-to-back Swaps
Derivative [Line Items]
Cash pledged as collateral	20,200,000	2,000,000.0
Back-to-back Swaps | Other Assets
Derivative [Line Items]
Notional Amount	374,191,000	211,246,000
Fair Value	16,927,000	4,449,000
Back-to-back Swaps | Other Liabilities
Derivative [Line Items]
Notional Amount	374,191,000	211,246,000
Fair Value	(16,927,000)	(4,449,000)
Counterparties
Derivative [Line Items]
Cash pledged as collateral	0	770,000
Counterparties | Back-to-back Swaps
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 680,000
Receive Rate | Back-to-back Swaps | Other Assets
Derivative [Line Items]
Weighted Average Rate	4.68%	5.10%
Receive Rate | Back-to-back Swaps | Other Liabilities
Derivative [Line Items]
Weighted Average Rate	4.05%	4.96%
Pay Rate | Back-to-back Swaps | Other Assets
Derivative [Line Items]
Weighted Average Rate	4.05%	4.96%
Pay Rate | Back-to-back Swaps | Other Liabilities
Derivative [Line Items]
Weighted Average Rate	4.68%	5.10%