Long-Term Debt and FHLB Stock (Narrative) (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2025 USD ($) subsidiary $ / shares	Dec. 31, 2024 USD ($) $ / shares	Dec. 31, 2005 USD ($) $ / shares shares
Long-Term Debt And Federal Home Loan Bank [Line Items]
Advances from the Federal Home Loan Bank	$ 26,603,000	$ 69,773,000
Number of wholly owned subsidiaries | subsidiary	1
Common stock, par value (in dollars per share) | $ / shares	$ 0.01	$ 0.01
Zions Bank
Long-Term Debt And Federal Home Loan Bank [Line Items]
Line of credit, maximum borrowing capacity	$ 10,000,000
Line of credit facility, maximum amount outstanding during period	0	$ 0
Pacific Coast Bankers Bank
Long-Term Debt And Federal Home Loan Bank [Line Items]
Line of credit, maximum borrowing capacity	50,000,000
Line of credit facility, maximum amount outstanding during period	0	$ 0
Subordinated Debt
Long-Term Debt And Federal Home Loan Bank [Line Items]
Subordinated debt securities	$ 5,155,000
Interest rate, variable rate basis	three-month term Secured Overnight Financing Rate (“SOFR”)
Interest variable rate	2.00%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	us-gaap:SecuredOvernightFinancingRateSofrMember
Relative spread adjustment	0.26%
Effective interest during period	6.59%	7.78%
Stated maturity date	May 23, 2035
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]
Preapproved secured line of credit with the FHLB	$ 637,023,000	$ 627,265,000
Pledged assets	319,587,000	306,410,000
Advances from the Federal Home Loan Bank	$ 26,603,000
Interest rate	4.06%
Impairment related to Federal Home Loan Bank	$ 0	0
Federal Home Loan Bank of New York ("FHLBNY") | Maturity Overnight
Long-Term Debt And Federal Home Loan Bank [Line Items]
Advances from the Federal Home Loan Bank	$ 0	$ 0