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NON-CONSOLIDATED VARIABLE INTEREST ENTITIES (VIEs) AND SERVICING ASSETS - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Apr. 30, 2004
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Mar. 31, 2025
Dec. 31, 2021
Servicing Liabilities At Fair Value [Line Items]            
Gain on early extinguishment of debt   $ 0 $ 1,605 $ 0    
Servicing Asset at Amortized Cost   25,019 26,941 29,037   $ 30,986
Servicing Asset At Fair Value Amount   $ 43,046 $ 45,244      
Weighted-average yield   1.45% 1.24%      
Percentage Of Variation In Assumptions   10.00%        
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Qualitative Information   These sensitivities are hypothetical and should be used with caution. As the figures indicate, changes in fair value based on a 10% variation in assumptions generally cannot be extrapolated because the relationship between the change in assumption and the change in fair value may not be linear. Also, in this table, the effect of a variation in a particular assumption on the fair value of the MSR is calculated without changing any other assumption. In reality, changes in one factor may result in changes in another (for example, increases in market interest rates may result in lower prepayments), which may magnify or counteract the sensitivities        
Debt Securities, Available-for-sale, Allowance for Credit Loss   $ 521 $ 511      
Junior subordinated debentures (amortized cost)   61,700 161,700      
Parent Company [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Gain on early extinguishment of debt   0 1,605 $ 0    
Junior subordinated debentures (amortized cost)   61,700 161,700      
Statutory Trust Two [Member] | Parent Company [Member] | Trust Preferred Securities [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Trust preferred securities repurchased   $ 97,000        
Trust preferred purchase price percent   84.00%        
Interest in Trust Preferred Securities   $ 3,000        
Trust preferred securities redemption call price percent   100.00%        
Repurchased face amount   $ 100,000        
Statutory Trust Two [Member] | Parent Company [Member] | Trust Preferred Securities [Member] | Scenario Forecast [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Repurchased face amount         $ 50,000  
Minimum [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Percentage Of Variation In Assumptions   10.00%        
Maximum [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Percentage Of Variation In Assumptions   20.00%        
Junior Subordinated Debt [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Spread on variable rate   0.26161%        
Debt Instrument Variable Interest Rate Type Extensible Enumeration   Secured Overnight Financing Rate Sofr Overnight Index Swap Rate [Member]        
Debt Instrument Description Of Variable Rate Basis   3-month CME Term SOFR        
Junior Subordinated Debt [Member] | Statutory Trust One [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Spread on variable rate   2.75%        
Junior Subordinated Debt [Member] | Statutory Trust Two [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Spread on variable rate   2.50%        
Variable Rate Demand Obligation [Member] | Statutory Trust One [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Proceeds from Issuance of Trust Preferred Securities $ 100,000          
Proceeds of the issuance, together with proceeds of the purchase 3,100          
Principal amount of corporation's junior subordinated deferrable debentures 103,100          
Junior subordinated debentures (amortized cost)   $ 61,700 $ 161,700      
Variable Rate Demand Obligation [Member] | Statutory Trust Two [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Proceeds from Issuance of Trust Preferred Securities 125,000          
Proceeds of the issuance, together with proceeds of the purchase 3,900          
Principal amount of corporation's junior subordinated deferrable debentures $ 128,900          
Variable Rate Demand Obligation [Member] | Junior Subordinated Debt [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Debt Instrument, Maturity Date, Description   The Junior Subordinated Deferrable Debentures mature on June 17, 2034, and September 20, 2034, respectively; however, under certain circumstances, the maturity of Junior Subordinated Deferrable Debentures may be shortened (such shortening would result in a mandatory redemption of the variable-rate TruPS).        
Residential MBS [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Weighted-average yield   1.79% 1.55%      
Debt Securities, Available-for-sale, Allowance for Credit Loss   $ 176 $ 116      
Residential MBS [Member] | Private label [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Servicing Asset at Amortized Cost   6,100 7,100      
Servicing Asset At Fair Value Amount   $ 4,200 $ 4,800      
Weighted-average yield   6.62% 7.66%      
Debt Securities, Available-for-sale, Allowance for Credit Loss   $ 176 $ 100      
Spread on variable rate   0.26161%        
Debt Instrument Variable Interest Rate Type Extensible Enumeration   Secured Overnight Financing Rate Sofr Overnight Index Swap Rate [Member]        
Debt Instrument Description Of Variable Rate Basis   3-month CME Term SOFR        
Residential MBS [Member] | Private label [Member] | Secured Overnight Financing Rate Sofr Overnight Index Swap Rate [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Spread on variable rate   0.26161%        
GNMA [Member]            
Servicing Liabilities At Fair Value [Line Items]            
Principal amount of corporation serviced loans securitized through GNMA   $ 2,100,000