Restructuring Charges (Narrative) (Details) $ in Millions		1 Months Ended	12 Months Ended
	Jul. 17, 2020 Branch	Oct. 31, 2020 Branch	Dec. 31, 2020 USD ($)
Restructuring Cost And Reserve [Line Items]
Number of bank branch closure | Branch	6
Percentage of branch network	10.00%
Percentage of branch network impact	6.00%
Number of additional branches planned to close | Branch		1
Pre tax expense related branch closures			$ 1.7
Total costs result in future cash expenditures			0.9
Anticipates annual expense savings branch closures			2.7
Employee Severance [Member]
Restructuring Cost And Reserve [Line Items]
Pre tax expense related branch closures			0.2
Lease Termination Costs [Member]
Restructuring Cost And Reserve [Line Items]
Pre tax expense related branch closures			0.5
Valuation Adjustments On Branch Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Pre tax expense related branch closures			$ 1.0