Commitments to Extend Credit (Outstanding Commitments to Extend Credit) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Commitments to grant loans [Member]
Other Commitments [Line Items]
Commitments to extend credit	$ 35,869	$ 26,919
Unfunded commitments under lines of credit [Member]
Other Commitments [Line Items]
Commitments to extend credit	$ 57,268	$ 61,309