Summary Of Significant Accounting And Reporting Policies (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) branch	Dec. 31, 2020 USD ($)
Condensed Financial Statements, Captions [Line Items]
Number of Reportable Segments	1
DiscontinuationofInterestThresholdDays	90 days
Financing Receivable, Threshold Period Past Due	30 days
Threshold period past due for write-off of financing receivable	120 days
Other real estate, foreclosed assets, and repossessed assets	$ 1,300	$ 1,700
Junior Subordinated Debenture Owed to Unconsolidated Subsidiary Trust		$ 4,100
Repayment Price Junior Subordinated Deferrable Interest Debentures		100.00%
Amortization Method Qualified Affordable Housing Project Investments	28,600	$ 14,400
Qualified Affordable Housing Project Investments, Commitment	$ 18,900	$ 6,800
City National
Condensed Financial Statements, Captions [Line Items]
Number of offices | branch	94