v3.26.3
Other Comprehensive Income - Summary of Components of OCI (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Equity [Abstract]        
Net change in fair value recorded in AOCI, Before-tax $ (115,499) $ 21,737 $ (131,173) $ 105,719
Net change in fair value recorded in AOCI, Tax effect 33,576 (6,319) 38,132 (32,943)
Net change in fair value recorded in AOCI, After-tax (81,923) 15,418 (93,041) 72,776
Net realized loss on investment securities reclassified into earnings Before-tax   8,185   8,185
Net realized loss on investment securities reclassified into earnings Tax effect   (2,379)   (2,379)
Net realized loss on investment securities reclassified into earnings After-tax   5,806   5,806
Amortization of net unrealized losses on securities transferred from AFS to HTM, Before-tax 104 149 361 432
Amortization of net unrealized losses on securities transferred from AFS to HTM, Tax effect (30) (53) (105) (126)
Amortization of net unrealized losses on securities transferred from AFS to HTM, After-tax 74 96 256 306
Net change in fair value recorded in AOCI (Derivatives designated as hedging instruments, Fair value hedges) Before - Tax 20,093 (1,411) 32,683 (18,364)
Net change in fair value recorded in AOCI (Derivatives designated as hedging instruments, Fair value hedges) Tax effect (5,841) 392 (9,501) 5,360
Net change in fair value recorded in AOCI (Derivatives designated as hedging instruments, Fair value hedges) After Tax 14,252 (1,019) 23,182 (13,004)
Net change in fair value recorded in AOCI (Derivatives designated as hedging instruments, Cash flow hedges) Before - Tax 503 92 2,709 (2,246)
Net change in fair value recorded in AOCI (Derivatives designated as hedging instruments, Cash flow hedges) Tax Effect (146) (37) (787) 650
Net change in fair value recorded in AOCI (Derivatives designated as hedging instruments, Cash flow hedges) After - Tax 357 55 1,922 (1,596)
Net change, Before-tax (94,799) 28,752 (95,420) 93,726
Net change, Tax effect 27,559 (8,396) 27,739 (29,438)
Net change, After-tax $ (67,240) $ 20,356 $ (67,681) $ 64,288