Commitments and Contingencies (Contract Amounts of Credit-related Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Unused Lines of Credit, Fixed [Member]
Contract amounts of credit-related financial instruments	$ 14,902	$ 7,467
Unused Lines of Credit, Variable [Member]
Contract amounts of credit-related financial instruments	3,770	11,307
Undisbursed Portion of Loan Proceeds, Fixed [Member]
Contract amounts of credit-related financial instruments	2,194	5,890
Standby Letters of Credit, Variable [Member]
Contract amounts of credit-related financial instruments	$ 993	$ 1,277