Long-Term Debt and FHLB Stock (Narrative) (Details) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) subsidiary $ / shares	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2005 USD ($) $ / shares shares
Long-Term Debt And Federal Home Loan Bank [Line Items]
Number Of Wholly Owned Subsidiaries | subsidiary	1
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Advances from the Federal Home Loan Bank	$ 87,683	$ 57,723
Zions Bank
Long-Term Debt And Federal Home Loan Bank [Line Items]
Line of credit, maximum borrowing capacity	10,000	10,000
Line of credit facility, maximum amount outstanding during period	0	0
Pacific Community Bankers Bank
Long-Term Debt And Federal Home Loan Bank [Line Items]
Line of credit, maximum borrowing capacity	50,000	50,000
Line of credit facility, maximum amount outstanding during period	$ 0	$ 0
Subordinated Debt.
Long-Term Debt And Federal Home Loan Bank [Line Items]
Interest rate, variable rate basis	at three month CME term Secured Overnight Financing Rate (“SOFR”)	three month LIBOR
Effective interest during period	7.64%	6.69%
Subordinated debt securities	$ 5,155
Stated maturity date	May 23, 2035
Subordinated Debt. | London Interbank Offered Rate L I B O R Extension [Member]
Long-Term Debt And Federal Home Loan Bank [Line Items]
Interest LIBOR rate		2.00%
Subordinated Debt. | SOFR
Long-Term Debt And Federal Home Loan Bank [Line Items]
Interest LIBOR rate	2.00%
Subordinated Debt. | RSB Capital Trust I
Long-Term Debt And Federal Home Loan Bank [Line Items]
Trust term	30 years
Subordinated Debt. | Private placement | RSB Capital Trust I
Long-Term Debt And Federal Home Loan Bank [Line Items]
Number of preferred securities issued			$ 5,000
Common stock issued | shares			155
Common stock, par value (in dollars per share) | $ / shares			$ 1
Federal Home Loan Bank of New York ("FHLBNY")
Long-Term Debt And Federal Home Loan Bank [Line Items]
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	$ 657,633	$ 667,905
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	208,911	195,455
Impairment Related To Federal Home Loan Stock	0	0
Federal Home Loan Bank of New York ("FHLBNY") | Maturity Overnight [Member]
Long-Term Debt And Federal Home Loan Bank [Line Items]
Advances from the Federal Home Loan Bank	$ 0	$ 0