v3.25.3
Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance $ 3,510,070 $ 3,175,601 $ 3,367,936 $ 3,199,142
Change in unrealized gain/(loss) 30,909 109,849 101,226 53,567
Amounts reclassified into net income 6,172 199,599 26,498 239,132
Other comprehensive income 37,081 309,448 127,724 292,699
Income tax expense 8,374 69,873 28,841 58,852
Other comprehensive income, net of tax 28,707 239,575 98,883 233,847
Ending balance 3,637,098 3,354,044 3,637,098 3,354,044
Cash Flow Hedges        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (1,372) (45,215) (15,275) (45,749)
Change in unrealized gain/(loss) 78 18,849 943 (17,762)
Amounts reclassified into net income 4,525 18,251 21,618 54,371
Other comprehensive income 4,603 37,100 22,561 36,609
Income tax expense 1,040 8,377 5,095 7,352
Other comprehensive income, net of tax 3,563 28,723 17,466 29,257
Ending balance 2,191 (16,492) 2,191 (16,492)
Available-for-Sale Securities        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (77,761) (283,559) (131,531) (273,806)
Change in unrealized gain/(loss) 30,831 91,000 100,283 71,329
Amounts reclassified into net income 0 179,581 0 179,581
Other comprehensive income 30,831 270,581 100,283 250,910
Income tax expense 6,962 61,097 22,644 51,179
Other comprehensive income, net of tax 23,869 209,484 77,639 199,731
Ending balance (53,892) (74,075) (53,892) (74,075)
Held-to-Maturity Securities        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (33,798) (38,958) (36,301) (42,449)
Change in unrealized gain/(loss) 0 0 0 0
Amounts reclassified into net income 1,647 1,767 4,880 5,180
Other comprehensive income 1,647 1,767 4,880 5,180
Income tax expense 372 399 1,102 321
Other comprehensive income, net of tax 1,275 1,368 3,778 4,859
Ending balance (32,523) (37,590) (32,523) (37,590)
Total        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (112,931) (367,732) (183,107) (362,004)
Ending balance $ (84,224) $ (128,157) $ (84,224) $ (128,157)