Fair Value of Assets and Liabilities (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020 USD ($) loan	Dec. 31, 2019 USD ($) loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of impaired loans not requiring a valuation allowance | loan		2
Impaired Loans, Cumulative Charge-Offs	$ 33
Number of impaired loans requiring a valuation allowance | loan	1
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 1,531	$ 1,584
Valuation allowance	$ 392	$ 417