v3.26.1
Securities - Narrative (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2025
USD ($)
security
chargeoff
Sep. 30, 2025
USD ($)
Jun. 30, 2025
USD ($)
Mar. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
chargeoff
Sep. 30, 2024
USD ($)
Jun. 30, 2024
USD ($)
Mar. 31, 2024
USD ($)
Dec. 31, 2025
USD ($)
security
chargeoff
Dec. 31, 2024
USD ($)
chargeoff
Debt Securities, Available-for-sale [Line Items]                    
Debt securities, accrued interest $ 3,000,000.0       $ 1,400,000       $ 3,000,000.0 $ 1,400,000
Held to maturity, allowance for credit losses $ 150,000       150,000       $ 150,000 150,000
Number of debt securities with unrealized losses | security 176               176  
Unrealized losses on debt securities in continuous loss position as percentage of total individual securities' amortized cost basis 10.00%               10.00%  
Unrealized losses on debt securities in continuous loss position as percentage of amortized cost basis of investment securities portfolio 5.60%               5.60%  
Number of debt securities in continuous loss position for over 12 months | security 125               125  
Debt securities in a continuous loss position for over 12 months, amortized cost basis $ 358,300,000               $ 358,300,000  
Debt securities in a continuous loss position for over 12 months, unrealized loss $ 55,200,000               $ 55,200,000  
Number of securities with impairment loss | security 0               0  
Provision for credit losses                 $ 81,729,000 20,034,000
Gross realized gains on sales of securities                 0 0
Gross realized losses                 0 0
Net unrealized gains (losses) on available-for-sale securities included in AOCI , net of applicable income taxes                 (7,300,000) (12,900,000)
Gain (loss) related to the amortization of transfers of securities from held to maturity to available for sale                 (9,300,000) (10,400,000)
Other comprehensive income (loss) $ 1,051,000 $ 1,849,000 $ 971,000 $ 1,688,000 $ (1,650,000) $ 907,000 $ 206,000 $ 628,000 5,559,000 91,000
Gains (losses) reclassified out of AOCI into earnings, net of tax                 0 $ 0
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent                    
Debt Securities, Available-for-sale [Line Items]                    
Other comprehensive income (loss)                 $ 1,400,000  
Corporate debt securities                    
Debt Securities, Available-for-sale [Line Items]                    
Number of charge-offs | chargeoff 0       0       0 0
Held-to-Maturity and Available-for-Sale Securities                    
Debt Securities, Available-for-sale [Line Items]                    
Provision for credit losses                 $ 0 $ 100,000
Deposits                    
Debt Securities, Available-for-sale [Line Items]                    
Debt securities, available-for-sale and held-to-maturity, fair value $ 695,400,000       $ 233,900,000       $ 695,400,000 $ 233,900,000