Premises and Equipment (Narrative) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 item
Premises and Equipment
Depreciation	$ 346	$ 342
Number of buildings sold and leased back | item			2
Sale lease back transaction, lease term of contract			10 years
Sale lease back transaction, lease renewal term			5 years
Sale leaseback transaction, rent expense	$ 167	$ 165