Annual report [Section 13 and 15(d), not S-K Item 405]

Summary of Significant Accounting Policies (Details)

v3.26.1
Summary of Significant Accounting Policies (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
USD ($)
segment
branch
Dec. 31, 2024
USD ($)
Property, Plant and Equipment [Line Items]    
Credit impairment on collateralized debt obligations $ 173 $ 173
Number of branches | branch 6  
Number of reportable operating segment | segment 1  
Operating segments | segment 1  
Cash Accounts    
Property, Plant and Equipment [Line Items]    
Cash, uninsured amount $ 40,400  
Cash Held by FRB and FHLB    
Property, Plant and Equipment [Line Items]    
Cash, uninsured amount 67,500  
Asset Pledged as Collateral    
Property, Plant and Equipment [Line Items]    
Financial instruments, owned, at fair value 315,500 $ 326,500
Derivative | Asset Pledged as Collateral    
Property, Plant and Equipment [Line Items]    
Financial instruments, owned, at fair value $ 1,900  
Maximum | Premises and Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life (in years) 39 years  
Maximum | Furniture and Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life (in years) 10 years  
Maximum | Residential real estate    
Property, Plant and Equipment [Line Items]    
Loan receivable, term 30 years  
Maximum | Home equity    
Property, Plant and Equipment [Line Items]    
Loan receivable, term 20 years  
Loan to value ratio 0.90  
Maximum | Commercial Real Estate    
Property, Plant and Equipment [Line Items]    
Loan receivable, term 10 years  
Loan to value ratio 0.80  
Ratio of borrower debt obligations 1.20  
Maximum | Construction Loans    
Property, Plant and Equipment [Line Items]    
Loan receivable, term 24 months  
Loan to value ratio 0.80  
Maximum | Consumer    
Property, Plant and Equipment [Line Items]    
Loan receivable, term 7 years  
Maximum | Manufactured homes    
Property, Plant and Equipment [Line Items]    
Contractual maturity (month) 25 years  
Minimum | Premises and Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life (in years) 15 years  
Minimum | Furniture and Equipment    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, useful life (in years) 2 years  
Minimum | Construction Loans    
Property, Plant and Equipment [Line Items]    
Loan receivable, term 9 months