Commitments and Contingent Liabilities (Off-Balance Sheet Risks) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fixed Rate [Member] | Standby Letters of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Amounts commitments to extend credit	$ 3,670	$ 4,244
Commitments to Extend Credit [Member] | Fixed Rate [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Amounts commitments to extend credit	31,496	90,635
Commitments to Extend Credit [Member] | Variable Rate [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Amounts commitments to extend credit	$ 204,072	$ 227,385