Securities - Schedule of Fair Value Of Available For Sale Securities By Contractual Maturities (Details) - USD ($)
$ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
| AFS securities |
|
|
| Due in one year or less, Amortized Cost |
$ 96,338
|
$ 68,259
|
| Due in one year or less, Fair value |
95,931
|
68,386
|
| Due after one year to five years, Amortized Cost |
623,804
|
647,426
|
| Due after one year to five years, Fair value |
622,334
|
650,113
|
| Due after five to ten years, Amortized Cost |
111,520
|
123,396
|
| Due after five to ten years, Fair value |
104,635
|
117,130
|
| Due after ten years, Amortized Cost |
3,369,777
|
3,304,082
|
| Due after ten years, Fair value |
3,037,364
|
2,989,940
|
| Amortized Cost |
4,201,439
|
4,143,163
|
| Fair Value |
3,860,264
|
3,825,569
|
| HTM securities |
|
|
| Due in one year or less, Amortized Cost |
1,010
|
0
|
| Due in one year or less, Fair value |
1,018
|
0
|
| Due after one year to five years, Amortized Cost |
129,544
|
131,313
|
| Due after one year to five years, Fair value |
123,123
|
125,047
|
| Due after five to ten years, Amortized Cost |
94,379
|
90,756
|
| Due after five to ten years, Fair value |
90,075
|
86,519
|
| Due after ten years, Amortized Cost |
487,622
|
377,488
|
| Due after ten years, Fair value |
467,719
|
364,408
|
| Amortized Cost |
712,555
|
599,557
|
| Fair Value |
681,935
|
575,974
|
| Total |
|
|
| Due in one year or less, Amortized Cost |
97,348
|
68,259
|
| Due in one year or less, Fair value |
96,949
|
68,386
|
| Due after one year to five years, Amortized Cost |
753,348
|
778,739
|
| Due after one year to five years, Fair value |
745,457
|
775,160
|
| Due after five to ten years, Amortized Cost |
205,899
|
214,152
|
| Due after five to ten years, Fair value |
194,710
|
203,649
|
| Due after ten years, Amortized Cost |
3,857,399
|
3,681,570
|
| Due after ten years, Fair value |
3,505,083
|
3,354,348
|
| Amortized Cost |
4,913,994
|
4,742,720
|
| Fair Value |
4,542,199
|
4,401,543
|
| Government-sponsored residential mortgage-backed securities |
|
|
| AFS securities |
|
|
| Due in one year or less, Amortized Cost |
1,148
|
661
|
| Due in one year or less, Fair value |
1,141
|
657
|
| Due after one year to five years, Amortized Cost |
8,329
|
10,753
|
| Due after one year to five years, Fair value |
8,201
|
10,602
|
| Due after five to ten years, Amortized Cost |
20,932
|
22,179
|
| Due after five to ten years, Fair value |
19,730
|
21,006
|
| Due after ten years, Amortized Cost |
2,799,602
|
2,719,718
|
| Due after ten years, Fair value |
2,565,435
|
2,501,044
|
| Amortized Cost |
2,830,011
|
2,753,311
|
| Fair Value |
2,594,507
|
2,533,309
|
| HTM securities |
|
|
| Due in one year or less, Amortized Cost |
0
|
0
|
| Due in one year or less, Fair value |
0
|
0
|
| Due after one year to five years, Amortized Cost |
0
|
0
|
| Due after one year to five years, Fair value |
0
|
0
|
| Due after five to ten years, Amortized Cost |
0
|
0
|
| Due after five to ten years, Fair value |
0
|
0
|
| Due after ten years, Amortized Cost |
205,168
|
210,142
|
| Due after ten years, Fair value |
188,388
|
194,547
|
| Amortized Cost |
205,168
|
210,142
|
| Fair Value |
188,388
|
194,547
|
| Government-sponsored commercial mortgage-backed securities |
|
|
| AFS securities |
|
|
| Due in one year or less, Amortized Cost |
38,420
|
10,528
|
| Due in one year or less, Fair value |
37,896
|
10,368
|
| Due after one year to five years, Amortized Cost |
580,309
|
601,026
|
| Due after one year to five years, Fair value |
579,623
|
604,330
|
| Due after five to ten years, Amortized Cost |
37,961
|
48,278
|
| Due after five to ten years, Fair value |
34,000
|
43,673
|
| Due after ten years, Amortized Cost |
476,118
|
488,562
|
| Due after ten years, Fair value |
388,335
|
401,960
|
| Amortized Cost |
1,132,808
|
1,148,394
|
| Fair Value |
1,039,854
|
1,060,331
|
| HTM securities |
|
|
| Due in one year or less, Amortized Cost |
0
|
0
|
| Due in one year or less, Fair value |
0
|
0
|
| Due after one year to five years, Amortized Cost |
129,544
|
130,301
|
| Due after one year to five years, Fair value |
123,123
|
124,033
|
| Due after five to ten years, Amortized Cost |
53,503
|
54,884
|
| Due after five to ten years, Fair value |
47,921
|
49,551
|
| Due after ten years, Amortized Cost |
0
|
0
|
| Due after ten years, Fair value |
0
|
0
|
| Amortized Cost |
183,047
|
185,185
|
| Fair Value |
171,044
|
173,584
|
| U.S. Treasury securities |
|
|
| AFS securities |
|
|
| Due in one year or less, Amortized Cost |
50,020
|
50,030
|
| Due in one year or less, Fair value |
50,175
|
50,350
|
| Due after one year to five years, Amortized Cost |
0
|
0
|
| Due after one year to five years, Fair value |
0
|
0
|
| Due after five to ten years, Amortized Cost |
0
|
0
|
| Due after five to ten years, Fair value |
0
|
0
|
| Due after ten years, Amortized Cost |
0
|
0
|
| Due after ten years, Fair value |
0
|
0
|
| Amortized Cost |
50,020
|
50,030
|
| Fair Value |
50,175
|
50,350
|
| State and municipal bonds and obligations |
|
|
| AFS securities |
|
|
| Due in one year or less, Amortized Cost |
6,750
|
7,040
|
| Due in one year or less, Fair value |
6,719
|
7,011
|
| Due after one year to five years, Amortized Cost |
35,166
|
35,647
|
| Due after one year to five years, Fair value |
34,510
|
35,181
|
| Due after five to ten years, Amortized Cost |
52,627
|
52,939
|
| Due after five to ten years, Fair value |
50,905
|
52,451
|
| Due after ten years, Amortized Cost |
94,057
|
95,802
|
| Due after ten years, Fair value |
83,594
|
86,936
|
| Amortized Cost |
188,600
|
191,428
|
| Fair Value |
175,728
|
181,579
|
| HTM securities |
|
|
| Due in one year or less, Amortized Cost |
0
|
0
|
| Due in one year or less, Fair value |
0
|
0
|
| Due after one year to five years, Amortized Cost |
0
|
0
|
| Due after one year to five years, Fair value |
0
|
0
|
| Due after five to ten years, Amortized Cost |
0
|
0
|
| Due after five to ten years, Fair value |
0
|
0
|
| Due after ten years, Amortized Cost |
282,454
|
167,346
|
| Due after ten years, Fair value |
279,331
|
169,861
|
| Amortized Cost |
282,454
|
167,346
|
| Fair Value |
279,331
|
169,861
|
| Corporate bonds |
|
|
| HTM securities |
|
|
| Due in one year or less, Amortized Cost |
1,010
|
0
|
| Due in one year or less, Fair value |
1,018
|
0
|
| Due after one year to five years, Amortized Cost |
0
|
1,012
|
| Due after one year to five years, Fair value |
0
|
1,014
|
| Due after five to ten years, Amortized Cost |
40,876
|
35,872
|
| Due after five to ten years, Fair value |
42,154
|
36,968
|
| Due after ten years, Amortized Cost |
0
|
0
|
| Due after ten years, Fair value |
0
|
0
|
| Amortized Cost |
41,886
|
36,884
|
| Fair Value |
$ 43,172
|
$ 37,982
|