v3.26.3
Comprehensive Income - Reclassifications Out of Accumulated Other Comprehensive Income (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2026
Sep. 30, 2025
Available for sale ("AFS") securities:                
Net reclassification adjustment for losses included in net income $ 0     $ 0     $ (9,728) $ 0
Income before income taxes 162,141     164,483     482,271 423,504
Related income tax effect (33,437)     (33,735)     (97,990) (87,729)
Net income (loss) 128,704 $ 131,377 $ 124,200 130,748 $ 120,721 $ 84,306 384,281 335,775
Cash flow hedge:                
Income before income taxes 162,141     164,483     482,271 423,504
Related income tax effect (33,437)     (33,735)     (97,990) (87,729)
Net income (loss) $ 128,704 $ 131,377 $ 124,200 $ 130,748 $ 120,721 $ 84,306 384,281 $ 335,775
Reclassification out of Accumulated Other Comprehensive Income [Member]                
Available for sale ("AFS") securities:                
Net income (loss)             2,797  
Cash flow hedge:                
Net income (loss)             2,797  
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains/Losses on AFS Securities [Member]                
Available for sale ("AFS") securities:                
Net reclassification adjustment for losses included in net income             9,728  
Income before income taxes             9,728  
Related income tax effect             (2,325)  
Net income (loss)             7,403  
Cash flow hedge:                
Income before income taxes             9,728  
Related income tax effect             (2,325)  
Net income (loss)             7,403  
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Gain Loss Net Cash Flow Hedge Parent [Member]                
Available for sale ("AFS") securities:                
Income before income taxes             (6,053)  
Related income tax effect             1,447  
Net income (loss)             (4,606)  
Cash flow hedge:                
Net reclassification adjustment for gains included in net income             (6,053)  
Income before income taxes             (6,053)  
Related income tax effect             1,447  
Net income (loss)             $ (4,606)