Quarterly report [Sections 13 or 15(d)]

LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Narrative) (Details)

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LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Narrative) (Details)
 3 Months Ended 12 Months Ended
Mar. 31, 2025
USD ($)
Contracts
Mar. 31, 2024
USD ($)
Contracts
Dec. 31, 2024
USD ($)
Contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Provision for Credit Losses $ 1,083,000 $ 882,000  
Net loan charge-offs 600,000 1,494,000  
Change in financing receivable allowance 500,000 $ (600,000)  
Accrued interest receivable $ 10,400,000   $ 10,300,000
Number of modified contracts | Contracts 0 0  
Net deferred costs $ 8,400,000   8,300,000
Real Estate - Residential [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Provision for Credit Losses 206,000 $ (248,000)  
Net loan charge-offs (111,000) (20,000)  
Real estate loans for which formal foreclosure proceedings were in process 0   $ 500,000
Real Estate - Commercial Mortgage [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Provision for Credit Losses 191,000 (39,000)  
Net loan charge-offs $ (3,000) $ (204,000)  
Extended Maturity And Interest Rate Reduction [Member] | Real Estate - Commercial Mortgage [Member]      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing receivable period after term extension 20 years    
Number of modified contracts | Contracts 1   1
Modified loan balance $ 300,000   $ 300,000
Loan modified interest rate reduction 1.00%    
Financing receivable period before term extension 5 years