v3.26.3
FAIR VALUES OF FINANCIAL INSTRUMENTS - Summary of Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements Other Than Goodwill (Details) - Significant Unobservable Inputs (Level 3)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
State and municipal securities | Discounted cash flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair Value $ 2,059 $ 1,955
State and municipal securities | Discounted cash flow | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Maturity/Call date 1 month 1 month
State and municipal securities | Discounted cash flow | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Maturity/Call date 5 years 5 years
US Muni BQ curve BBB BBB
State and municipal securities | Discounted cash flow | Discount rate | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.042 0.036
State and municipal securities | Discounted cash flow | Discount rate | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.060 0.057
State and municipal securities | Discounted cash flow | Weighted-average coupon | Weighted-average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.039 0.036
Corporate obligations | Discounted cash flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair Value $ 31  
Corporate obligations | Discounted cash flow | Weighted-average coupon | Weighted-average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0  
Corporate obligations | Discounted cash flow | Risk free rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.0026  
Corporate obligations | Discounted cash flow | plus premium for illiquidity (basis points)    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.0200  
Corporate obligations | Discounted cash flow    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair Value   $ 31
Corporate obligations | Discounted cash flow | Weighted-average coupon | Weighted-average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input   0
Corporate obligations | Discounted cash flow | Risk free rate    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input   0.0026
Corporate obligations | Discounted cash flow | plus premium for illiquidity (basis points)    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input   0.0200
Collateral dependent loans | Collateral based measurements    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Fair Value $ 56,828 $ 65,302
Collateral dependent loans | Collateral based measurements | Discount to reflect current market conditions and ultimate collectability | Minimum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0 0.01
Collateral dependent loans | Collateral based measurements | Discount to reflect current market conditions and ultimate collectability | Maximum    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.95 0.16
Collateral dependent loans | Collateral based measurements | Weighted-average discount by loan balance | Weighted-average    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Measurement input 0.263 0.015