v3.25.1
Securities - Narrative (Details)
 3 Months Ended
Mar. 31, 2025
USD ($)
security
Mar. 31, 2024
USD ($)
security
Dec. 31, 2024
USD ($)
security
Debt Securities, Available-for-Sale [Line Items]      
Accrued interest receivable on available-for-sale securities $ 4,500,000   $ 4,200,000
Unrealized losses 0    
Fair Value 1,312,680,000   1,248,203,000
Carrying value 1,401,756,000   1,356,549,000
Unrealized gain (loss) on equity securities 8,000 $ (490,000)  
Collateral Pledged      
Debt Securities, Available-for-Sale [Line Items]      
Fair Value 611,300,000   621,400,000
Carrying value $ 674,100,000   $ 695,100,000
Sale Of Available-for-Sale Securities      
Debt Securities, Available-for-Sale [Line Items]      
Number of investment securities sold | security 3 1  
Proceeds from sale of investment securities $ 5,600,000 $ 14,700,000  
Called Available-for-Sale Securities      
Debt Securities, Available-for-Sale [Line Items]      
Number of investment securities sold | security   1  
Proceeds from sale of investment securities   $ 2,500,000  
Mortgage-backed securities      
Debt Securities, Available-for-Sale [Line Items]      
Number of securities in unrealized loss portions for longer than 12 months | security 402   404
Number of securities in unrealized loss positions for less than 12 months | security 34   59
Fair Value $ 1,291,773,000   $ 1,227,333,000
Carrying value $ 1,380,674,000   $ 1,335,177,000
U.S. government agencies      
Debt Securities, Available-for-Sale [Line Items]      
Number of securities in unrealized loss portions for longer than 12 months | security 3   3
Number of securities in unrealized loss positions for less than 12 months | security 1   2
Fair Value $ 17,857,000   $ 17,897,000
Carrying value $ 17,912,000   $ 18,196,000
Municipal bonds      
Debt Securities, Available-for-Sale [Line Items]      
Number of securities in unrealized loss portions for longer than 12 months | security 2   2
Fair Value $ 3,050,000   $ 2,973,000
Carrying value $ 3,170,000   $ 3,176,000