v3.26.3
Borrowing Arrangements (Details) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Debt Instrument [Line Items]    
Other borrowings $ 894,605 $ 208,657
FHLB borrowings 800,750 211,136
Other borrowings:    
Debt Instrument [Line Items]    
Other borrowings 894,605 208,657
Average amount outstanding during the period [1] 437,085 107,989
Maximum amount outstanding during the period [2] $ 894,605 $ 297,359
Weighted average interest rate during the period [3] 3.60% 4.50%
Interest rate at end of the period [4] 3.70% 3.60%
FHLB borrowings:    
Debt Instrument [Line Items]    
FHLB borrowings $ 800,750 $ 211,136
Average amount outstanding during the period [1] 622,465 372,342
Maximum amount outstanding during the period [2] $ 995,848 $ 651,782
Weighted average interest rate during the period [3] 3.90% 3.70%
Interest rate at end of the period [4] 4.20% 2.90%
[1] The average amount outstanding during the period was computed by dividing the total daily outstanding principal balances by the number of days in the period.
[2] The maximum amount outstanding at any month-end during the period.
[3] The weighted average interest rate during the period was computed by dividing the actual interest expense (annualized for interim periods) by the average amount outstanding during the period. The weighted average interest rate on FHLB borrowings and other borrowings includes the effect of interest rate swaps.
[4] The interest rate includes the effect of interest rate swaps.