v3.26.1
Loans Receivable and Allowance for Credit Losses - Narrative (Details)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
loan
lending_initiative
Mar. 31, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
loan
lending_initiative
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
loan
Sep. 30, 2025
lending_initiative
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Oct. 01, 2021
Jan. 01, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans receivable, gross $ 885,909,000     $ 885,909,000   $ 592,562,000          
Targeted lending initiatives | lending_initiative 3     3     3        
Allowance for credit loss $ 8,469,000 $ 7,779,000 $ 7,795,000 $ 8,469,000 $ 7,795,000 6,839,000   $ 6,729,000 $ 7,305,000    
Provision for credit losses purchased seasoned loans   925,000                  
Period for charged off of open-end credits       180 days              
Period for charged off of close-end credits       120 days              
Maximum period for charged off of consumer installment loans       120 days              
Maximum period for charge off, open ended consumer credit       180 days              
Interest lost on nonaccrual loans 1,000,000.0   900,000 $ 2,000,000.0 2,100,000            
Threshold amount for nonaccrual and substandard loans evaluation $ 100,000     $ 100,000              
Discount of appraisal value, selling costs 8.00%     8.00%              
Number of modified contracts | loan 1     1              
Modified loan amount $ 2,700,000     $ 2,700,000              
Unfunded Loan Commitment                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Allowance for credit loss $ 113,000     $ 113,000   80,000          
Unsecured Line of Credit Program for High-Net-Worth Individuals                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Financing receivable before allowance for credit loss maturity, term 1 year     1 year              
Unsecured Line of Credit Program for High-Net-Worth Individuals | Minimum                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans receivable, gross $ 250,000     $ 250,000              
Unsecured Line of Credit Program for High-Net-Worth Individuals | Maximum                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans receivable, gross 5,000,000     5,000,000              
Rediscount Line of Credit Program | Minimum                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans receivable, gross $ 1,000,000     $ 1,000,000              
Financing receivable before allowance for credit loss maturity, term 12 months     12 months              
Rediscount Line of Credit Program | Maximum                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans receivable, gross $ 15,000,000     $ 15,000,000              
Financing receivable before allowance for credit loss maturity, term 36 months     36 months              
Commercial Real Estate Lending Program | Minimum                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans receivable, gross $ 1,000,000     $ 1,000,000              
Financing receivable before allowance for credit loss maturity, term 12 months     12 months              
Commercial Real Estate Lending Program | Maximum                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans receivable, gross $ 15,000,000     $ 15,000,000              
Financing receivable before allowance for credit loss maturity, term 60 months     60 months              
SBA Loans                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Percentage of principal balance guaranteed 75.00%     75.00%           75.00% 90.00%
Loans receivable, gross $ 18,000,000.0     $ 18,000,000.0   18,400,000          
Commercial Real Estate                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Maximum percentage of credit extension based on market value of collateral       75.00%              
Payments to acquire loans receivable 0     $ 0              
Loans receivable, gross 487,265,000     487,265,000   346,191,000          
Allowance for credit loss 2,881,000 2,602,000 2,436,000 $ 2,881,000 2,436,000 2,340,000   2,275,000 2,241,000    
Multi-family Real Estate                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Maximum percentage of credit extension based on market value of collateral       80.00%              
Construction                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Percentage of maximum loan to value       75.00%              
Loans receivable, gross 0     $ 0              
Allowance for credit loss 0 0 5,000 0 5,000 0   8,000 5,000    
Residential Real Estate                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Payments to acquire loans receivable 0   92,000 108,000,000 178,000            
Bank sold 0   28,900,000 0 28,900,000            
Loans receivable, gross 201,153,000     201,153,000   79,667,000          
Allowance for credit loss 1,241,000 1,356,000 519,000 1,241,000 519,000 753,000   639,000 596,000    
Consumer and Other                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans receivable, gross 8,396,000     8,396,000   19,877,000          
Allowance for credit loss 233,000 $ 289,000 3,050,000 233,000 3,050,000 441,000   $ 2,607,000 $ 3,386,000    
Consumer and Other | Unsecured Consumer Loans                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Payments to acquire loans receivable 0   0 0 0            
Bank sold           9,000,000.0          
Loans receivable, gross 300,000     300,000   $ 700,000          
Individual unsecured consumer loans | loan           1,092          
Consumer and Other | Home equity lines of credit                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Payments to acquire loans receivable 0   0 0 0            
Bank sold $ 0   $ 15,900,000 $ 0 $ 15,900,000