Securities (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($) security state	Dec. 31, 2018 USD ($) security
Debt Securities, Available-for-sale [Line Items]
State and Political Subdivisions Securities, Number of States with Highest Volume | state	5
Securities pledged to secure public deposits and other purposes | $	$ 86.1	$ 58.6
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | security	88	134
Residential Mortgage Backed Securities [Member] | Minimum [Member]
Debt Securities, Available-for-sale [Line Items]
Contractual maturity	5 years
Estimated average life to maturity	1 month
Residential Mortgage Backed Securities [Member] | Maximum [Member]
Debt Securities, Available-for-sale [Line Items]
Contractual maturity	50 years
Estimated average life to maturity	32 years