v3.25.3
GOODWILL AND OTHER INTANGIBLE ASSETS--Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]            
Goodwill $ 0 $ 1,800 $ 0 $ 0 $ 1,788  
Other Depreciation and Amortization 3,500   3,300 10,100 9,700  
Amortization of Mortgage Servicing Rights (MSRs) $ 1,100   $ 900 $ 3,000 $ 2,600  
Core deposits            
Finite-Lived Intangible Assets [Line Items]            
Intangible assets amortization method       accelerated basis    
Estimated weighted average life (in years) 2 years 6 months     2 years 6 months    
Customer lists            
Finite-Lived Intangible Assets [Line Items]            
Intangible assets amortization method       straight-line basis    
Customer lists | Summit Funding Group            
Finite-Lived Intangible Assets [Line Items]            
Finite-Lived Intangible Assets, Net $ 20,700     $ 20,700   $ 22,600
Finite-Lived Intangible Assets, Remaining Amortization Period 8 years 3 months 18 days     8 years 3 months 18 days    
Customer lists | Bannockburn [Member]            
Finite-Lived Intangible Assets [Line Items]            
Finite-Lived Intangible Assets, Net $ 17,600     $ 17,600   20,300
Finite-Lived Intangible Assets, Remaining Amortization Period 4 years 10 months 24 days     4 years 10 months 24 days    
Customer lists | Agile Premium Finance            
Finite-Lived Intangible Assets [Line Items]            
Finite-Lived Intangible Assets, Net $ 2,400     $ 2,400   $ 2,500
Finite-Lived Intangible Assets, Remaining Amortization Period 11 years 4 months 24 days     11 years 4 months 24 days