Commitments and Contingent Liabilities (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Loss Contingencies [Line Items]
Letter of Credit expiration period	1 year
Commitments to Grant Loans [Member]
Loss Contingencies [Line Items]
Outstanding loans commitments and other unused lines of credit	$ 115,052,000	$ 110,485,000
Outstanding Letters of Credit [Member]
Loss Contingencies [Line Items]
Outstanding loans commitments and other unused lines of credit	2,573,000	2,624,000
Commercial Letter Of Credit [Member]
Loss Contingencies [Line Items]
Outstanding loans commitments and other unused lines of credit	$ 7,975,000	$ 7,725,000