v3.26.1
Accumulated Other Comprehensive Loss - Reclassification from Each Component of Accumulated Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Reclassification Out Of Accumulated Other Comprehensive Loss            
Gains (losses) on securities transactions, net $ 50   $ (1)   $ 71 $ 45
Tax effect (49,563)   (39,924)   (94,829) (72,986)
Interest and fees on loans 487,024   432,408   958,549 852,513
Other non-interest expense 36,616   32,905   73,216 65,245
Total net of tax 170,885 $ 163,913 133,167 $ 106,058 334,798 239,225
Amounts Reclassified from Accumulated Other Comprehensive Loss            
Reclassification Out Of Accumulated Other Comprehensive Loss            
Total net of tax 282   133   401 263
Amounts Reclassified from Accumulated Other Comprehensive Loss | Unrealized Gains and Losses on AFS Securities            
Reclassification Out Of Accumulated Other Comprehensive Loss            
Gains (losses) on securities transactions, net 0   0   10 0
Tax effect 0   0   (3) 0
Total net of tax 0   0   7 0
Amounts Reclassified from Accumulated Other Comprehensive Loss | Unrealized gains on derivatives (cash flow hedges) before tax            
Reclassification Out Of Accumulated Other Comprehensive Loss            
Tax effect (48)   (83)   (96) (166)
Interest and fees on loans 173   304   344 605
Total net of tax 125   221   248 439
Amounts Reclassified from Accumulated Other Comprehensive Loss | Pension settlement gain            
Reclassification Out Of Accumulated Other Comprehensive Loss            
Tax effect (65)   0   (65) 0
Other non-interest expense (234)   0   (234) 0
Total net of tax 169   0   169 0
Amounts Reclassified from Accumulated Other Comprehensive Loss | Amortization of actuarial net losses            
Reclassification Out Of Accumulated Other Comprehensive Loss            
Tax effect 4   33   8 66
Other non-interest expense (16)   (121)   (31) (242)
Total net of tax $ (12)   $ (88)   $ (23) $ (176)