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Securities (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2024
USD ($)
item
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Feb. 06, 2024
USD ($)
Basis adjustments $ 2,025 $ 949    
Securities transferred from held-to-maturity to available for sale 20,627      
Total Securities available for sale, Fair Value 1,497,905 874,753    
Allowance for credit loss 2,627 0    
Accrued interest receivable on available-for-sale debt securities 8,800 7,100    
Carrying value of securities at the time of sale $ 489,200   $ 84,200  
Percentage of average yield of securities sold 2.32%   1.17%  
Purchase cost of securities $ 1,327,300 $ 187,200 $ 241,200  
Percentage of average yield of securities purchased 6.40% 6.56% 3.20%  
Other Assets [Member] | Non-qualified Deferred Compensation Plan [Member]        
Deferred Compensation Plan, Amounts Held in Rabbi Trust $ 27,200 $ 26,500    
Municipals        
Number of securities transferred to available for sale classification | item 1      
Securities transferred from held-to-maturity to available for sale $ 20,600      
Net carrying value of securities transferred to available for sale 19,900      
Provision to the allowance for credit losses 2,600      
Total Securities available for sale, Fair Value 18,000      
Allowance for credit loss 2,627      
Corporate        
Total Securities available for sale, Fair Value 125,249 155,449    
Corporate | New York based bank holding company        
Total Securities available for sale, Fair Value       $ 10,000
Held-to-maturity Securities        
Specific reserve for outstanding balance of financing receivable in active forbearance 400 1,100    
Accrued interest receivable on held-to-maturity securities $ 100 100    
Portfolio Layer Hedges on Closed Portfolio of Securities Available for Sale [Member] | Designated as Hedging Instrument [Member]        
Basis adjustments   2,300    
Total Securities available for sale, Fair Value   $ 283,200