Loans And Allowance For Loan Losses (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015	Oct. 09, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	$ 7.9	$ 7.9	$ 7.5
Actual loss period		3 years
Period to sell loans from the date of closing		1 month
Loans Purchased Evaluated in Conjunction With The Acquisition				$ 200.0
Loans Purchased Evaluated in Conjunction With The Acquisition, Discount				4.5
Loans, purchase credit impaired				7.8
Loans and debt securities acquired with deteriorated credit quality, discount				$ 3.3
Accrued additional interest income		$ 1.0
Interest And Fee Income Nonaccruing Loans		$ 0.5
Troubled debt restructuring default period		90 days
Troubled debt restructuring Period		12 months
Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans to individuals and businesses	$ 579.2
Percentage of loans to individuals and businesses	31.00%	31.00%
Real Estate Mortgage [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid principal of mortgage loans serviced for others	$ 454.0	$ 454.0	$ 432.3
Healthcare [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans to individuals and businesses	$ 443.6
Percentage of loans to individuals and businesses	24.00%	24.00%
Maximum [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of days for independent appraisals on real estate collateral		30 days