XML 91 R65.htm IDEA: XBRL DOCUMENT v3.25.0.1
Investment Securities - Narrative (Details)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2024
USD ($)
security
Dec. 31, 2024
USD ($)
security
Dec. 31, 2023
USD ($)
security
Dec. 31, 2022
USD ($)
Investment securities total $ 1,000,000 $ 1,000,000 $ 1,200,000  
Securities with no stated contractual date, amortized cost 700 700    
Available-for-sale Securities 527,547 527,547 628,829  
Held-to-maturity securities 533,108 533,108 585,052  
Purchases of available-for-sale securities   185,713 0 $ 259,846
Loss on security sales $ 6,600 (6,582)    
Maturities and paydowns of available-for-sale securities   157,538 $ 92,032 141,892
Sales of available-for-sale securities   $ 132,113   128,430
Number of securities | security 180 180 230  
Gain/(loss) on recovery of securities with previously incurred OTTI $ 6,600 $ (6,582)    
Purchases of held-to-maturity securities   10,483 $ 2,452 101,699
Maturities and paydowns of held-to-maturity securities   $ 63,078 $ 69,555 $ 133,363
Number of held-to-maturity securities in unrealized loss positions | security 160 160 123  
Held-to-maturity investment securities pledged as collateral $ 500,500 $ 500,500 $ 559,300  
Held-to-maturity investment securities held as collateral 0 0 $ 0  
Accrued interest receivable from available-for-sale investment securities $ 1,300 $ 1,300    
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Noncurrent, Statement of Financial Position [Extensible Enumeration] Financing Receivable, Allowance for Credit Losses Financing Receivable, Allowance for Credit Losses Financing Receivable, Allowance for Credit Losses  
Accrued interest receivable from held-to-maturity investment securities $ 900 $ 900 $ 1,000  
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Financing Receivable, Allowance for Credit Losses Financing Receivable, Allowance for Credit Losses Financing Receivable, Allowance for Credit Losses  
Other securities investments with no contractual maturity        
Securities with no stated contractual date, fair value $ 800 $ 800    
Asset Pledged as Collateral        
Available-for-sale Securities 0 0 $ 0  
Asset Pledged as Collateral | Federal Funds Purchased        
Available-for-sale Securities $ 238,600 $ 238,600 $ 312,400