Derivative Financial Instruments (Loan Swaps) (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Feb. 05, 2016
Derivative [Line Items]
Cash pledged as collateral	$ 0	$ 1,200,000
Other Assets
Derivative [Line Items]
Notional Amount	11,266,000	14,045,000
Other Liabilities
Derivative [Line Items]
Notional Amount	2,231,000		$ 2,000,000
Back-to-back Swaps
Derivative [Line Items]
Cash pledged as collateral	2,000,000	1,600,000
Back-to-back Swaps | Other Assets
Derivative [Line Items]
Notional Amount	211,246,000	126,766,000
Fair Value	4,449,000	2,377,000
Back-to-back Swaps | Other Liabilities
Derivative [Line Items]
Notional Amount	211,246,000	126,766,000
Fair Value	(4,449,000)	(2,377,000)
Counterparties
Derivative [Line Items]
Cash pledged as collateral	770,000	0
Counterparties | Back-to-back Swaps
Derivative [Line Items]
Cash pledged as collateral	$ 680,000	$ 190,000
Receive Rate | Back-to-back Swaps | Other Assets
Derivative [Line Items]
Weighted Average Rate	5.10%	4.70%
Receive Rate | Back-to-back Swaps | Other Liabilities
Derivative [Line Items]
Weighted Average Rate	4.96%	4.03%
Pay Rate | Back-to-back Swaps | Other Assets
Derivative [Line Items]
Weighted Average Rate	4.96%	4.03%
Pay Rate | Back-to-back Swaps | Other Liabilities
Derivative [Line Items]
Weighted Average Rate	5.10%	4.70%