Allowance For Credit Losses (Narrative) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) contract	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Mar. 10, 2023 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivable, Impaired [Line Items]
Threshold period for discontinuance of interest accrual			90 days
Financing receivable, nonaccrual, interest income			$ 0	$ 0
Collateral dependent loans	$ 0		$ 0			$ 0
Financing receivable, threshold period past due	30 days		30 days
Loans, Evaluated for impairment, Individually	$ 1,000,000		$ 1,000,000
Provision for (recovery of) credit losses	$ 200,000	$ 730,000	3,543,000	(26,000)
Citizens Commerce Bancshares, Inc.
Financing Receivable, Impaired [Line Items]
Allowance for credit losses acquired					$ 2,000,000
Allowance for credit losses					$ 2,800,000
Commercial Borrower
Financing Receivable, Impaired [Line Items]
Provision for (recovery of) credit losses			$ 1,300,000
Number of loans downgraded | contract	2
Residential real estate
Financing Receivable, Impaired [Line Items]
Threshold period past due for write-off of financing receivable	120 days		120 days
Provision for (recovery of) credit losses	$ (121,000)	152,000	$ 200,000	(513,000)
Commercial Industrial Loans And Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Threshold period past due for write-off of financing receivable	120 days		120 days
Consumer
Financing Receivable, Impaired [Line Items]
Threshold period past due for write-off of financing receivable	180 days		180 days
Provision for (recovery of) credit losses	$ (26,000)	$ 6,000	$ 320,000	$ (37,000)