v3.26.1
LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans pledge with FHLB under blanket lien $ 2,250,000,000   $ 2,250,000,000          
Loans held for investment 3,094,753,000   3,094,753,000   $ 3,033,887,000      
Loans held for sale, at lower of cost or fair value 15,828,000   15,828,000   25,105,000      
Loans held for sale transferred to held for investment 7,408,000     $ 0        
Loans held for sale 15,800,000   15,800,000   25,600,000      
Valuation allowance on loans held for sale     266,000 0        
Loans over 90 days past due and still accruing interest $ 0   $ 0   0      
Factor percentage applied to other individually evaluated loans upon amortized balance trigger 30.00%   30.00%          
Individually $ 24,000,000.0   $ 24,000,000.0   30,400,000      
ACL attributed to loans individually evaluated 373,000   373,000   373,000      
Changes in individually evaluated loans     15,700,000   16,100,000      
Defaults of loans that were modified in the last 12 months 0 $ 0 0 0        
Accrued interest receivable on loans receivable, net 9,700,000   9,700,000   9,800,000      
Provision for (reversal of) credit losses for unfunded loan commitments (336,000) 29,000 (336,000) (589,000)        
Allowance for credit losses - unfunded loan commitments 1,769,000 2,514,000 1,769,000 2,514,000 2,105,000 $ 2,105,000 $ 2,485,000 $ 3,103,000
Other real estate owned, net 8,600,000   8,600,000   0      
Loans transferred to other real estate owned   0 8,613,000 0        
Other real estate owned sold during the period 0 (4,100,000) 0 (4,100,000)        
Loss on sale of other real estate owned   (862,000) 0 (862,000)        
Valuation allowance on loans held for sale 0 0 0 0        
Loan Pricing                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Maximum amortized balance of other individually evaluated loans triggering loan pricing approach 200,000   200,000          
Individually         553,000      
Underlying Value of Collateral                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Individually 23,500,000   23,500,000   29,800,000      
Discounted Cash Flow                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Individually 541,000   541,000          
Small Business Administration 7(a) Loans                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans held for sale, at lower of cost or fair value         7,800,000      
Asset Pledged as Collateral | Federal Home Loan Bank Advances                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans held for investment 1,420,000,000   1,420,000,000          
Asset Pledged as Collateral | Federal Reserve Bank Advances                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans held for investment 323,700,000   323,700,000          
Consumer                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans held for investment 2,666,000   2,666,000   2,215,000      
Loans held for sale, at lower of cost or fair value         17,300,000      
Valuation allowance on loans held for sale 0 $ 0 266,000 $ 0        
Construction and Land Development                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans held for investment $ 133,828,000   133,828,000   $ 138,894,000      
Loans transferred to other real estate owned     $ 8,600,000          
Financing Receivable | Credit Concentration Risk | Real Estate - Other                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Percent of total loans     80.00%   80.00%