v3.26.3
Stockholders' Equity (Changes in Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Unrealized gains (losses) on investment securities available for sale:        
Net unrealized holding gains (losses) arising during the period, Before Tax $ (173,079) $ 40,714 $ (184,012) $ 117,781
Amounts reclassified to gain (loss) on investment securities available for sale, net, Before Tax 2,251 (659) (1,962) (2,097)
Net change in unrealized gains (losses) on investment securities available for sale, Before Tax (170,828) 40,055 (185,974) 115,684
Net unrealized holding gains (losses) arising during the period, Tax Effect 45,000 (10,586) 47,843 (30,623)
Amounts reclassified to gain (loss) on investment securities available for sale, net, Tax Effect (585) 171 510 545
Net change in unrealized gains (losses) on investment securities available for sale, Tax Effect 44,415 (10,415) 48,353 (30,078)
Net unrealized holding gains (losses) arising during the period, Net of Tax (128,079) 30,128 (136,169) 87,158
Amounts reclassified to gain (loss) on investment securities available for sale, net, Net of Tax 1,666 (488) (1,452) (1,552)
Net change in unrealized gains (losses) on securities available for sale (126,413) 29,640 (137,621) 85,606
Unrealized gains (losses) on derivative instruments:        
Net unrealized holding gains (losses) arising during the period, Before Tax (14,325) (1,130) (33,296) 5,947
Amounts reclassified, Before Tax (1,022) (3,673) (3,860) (14,356)
Net change in unrealized gains (losses) on derivative instruments, Before Tax (15,347) (4,803) (37,156) (8,409)
Net unrealized holding gains (losses) arising during the period, Tax Effect 3,724 294 8,657 (1,546)
Net change in unrealized gains (losses) on derivative instruments, Tax Effect 3,989 1,248 9,660 2,186
Net unrealized holding gains (losses) arising during the period, Net of Tax (10,601) (836) (24,639) 4,401
Amounts reclassified, Net of Tax (757) (2,719) (2,857) (10,624)
Net change in unrealized gains (losses) on derivative instruments, Net of Tax (11,358) (3,555) (27,496) (6,223)
Other comprehensive income (loss), Before Tax (186,175) 35,252 (223,130) 107,275
Other comprehensive income (loss), Tax Effect 48,404 (9,167) 58,013 (27,892)
Other comprehensive income (loss) (137,771) 26,085 (165,117) 79,383
Location, Statement of Income, Balance [Axis]: us-gaap:InterestAndFeeIncomeLoansAndLeases        
Unrealized gains (losses) on derivative instruments:        
Amounts reclassified, Before Tax (617) 1,563 (1,975) 4,172
Amounts reclassified, Tax Effect 160 (407) 513 (1,085)
Amounts reclassified, Net of Tax (457) 1,156 (1,462) 3,087
Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseBorrowings        
Unrealized gains (losses) on derivative instruments:        
Amounts reclassified, Before Tax (405) (4,404) (1,885) (15,519)
Amounts reclassified, Tax Effect 105 1,145 490 4,035
Amounts reclassified, Net of Tax (300) (3,259) (1,395) (11,484)
Location, Statement of Income, Balance [Axis]: us-gaap:InterestExpenseDeposits        
Unrealized gains (losses) on derivative instruments:        
Amounts reclassified, Before Tax 0 (832) 0 (3,009)
Amounts reclassified, Tax Effect 0 216 0 782
Amounts reclassified, Net of Tax $ 0 $ (616) $ 0 $ (2,227)