Allowance for Credit Losses, Credit Quality and Other - Summary of Amortized Cost of Performing and Nonperforming Loans (Details) - USD ($)
$ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
$ 475,935
|
$ 2,820,916
|
| Year Two |
2,778,489
|
2,160,404
|
| Year Three |
2,171,532
|
1,758,038
|
| Year Four |
1,364,561
|
2,655,695
|
| Year Five |
2,417,013
|
1,337,604
|
| Prior |
4,257,290
|
3,070,063
|
| Revolving Loans Amortized Cost Basis |
2,168,808
|
1,883,489
|
| Total |
15,633,628
|
15,686,209
|
| Commercial real estate loans |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
237,410
|
1,438,572
|
| Year Two |
1,533,372
|
1,469,083
|
| Year Three |
1,331,537
|
614,895
|
| Year Four |
598,370
|
1,492,474
|
| Year Five |
1,344,826
|
783,211
|
| Prior |
2,503,354
|
1,809,333
|
| Revolving Loans Amortized Cost Basis |
781,310
|
741,949
|
| Total |
8,330,179
|
8,349,517
|
| Commercial real estate loans | Non-farm/non-residential |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
81,461
|
590,656
|
| Year Two |
580,589
|
352,861
|
| Year Three |
444,165
|
352,711
|
| Year Four |
368,217
|
1,174,688
|
| Year Five |
1,139,350
|
711,418
|
| Prior |
2,307,489
|
1,660,676
|
| Revolving Loans Amortized Cost Basis |
474,258
|
447,102
|
| Total |
5,395,529
|
5,290,112
|
| Commercial real estate loans | Non-farm/non-residential | Performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
81,461
|
590,656
|
| Year Two |
580,589
|
319,429
|
| Year Three |
412,089
|
352,286
|
| Year Four |
367,056
|
1,147,293
|
| Year Five |
1,112,001
|
709,851
|
| Prior |
2,275,331
|
1,629,945
|
| Revolving Loans Amortized Cost Basis |
474,258
|
447,102
|
| Total |
5,302,785
|
5,196,562
|
| Commercial real estate loans | Non-farm/non-residential | Non-performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
0
|
0
|
| Year Two |
0
|
33,432
|
| Year Three |
32,076
|
425
|
| Year Four |
1,161
|
27,395
|
| Year Five |
27,349
|
1,567
|
| Prior |
32,158
|
30,731
|
| Revolving Loans Amortized Cost Basis |
0
|
0
|
| Total |
92,744
|
93,550
|
| Commercial real estate loans | Construction/land development |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
152,286
|
803,545
|
| Year Two |
908,104
|
1,069,376
|
| Year Three |
841,341
|
238,533
|
| Year Four |
207,409
|
268,726
|
| Year Five |
162,923
|
38,802
|
| Prior |
102,095
|
76,159
|
| Revolving Loans Amortized Cost Basis |
239,446
|
231,852
|
| Total |
2,613,604
|
2,726,993
|
| Commercial real estate loans | Construction/land development | Performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
152,286
|
803,545
|
| Year Two |
908,104
|
1,065,095
|
| Year Three |
833,919
|
238,336
|
| Year Four |
207,409
|
268,292
|
| Year Five |
162,438
|
38,502
|
| Prior |
101,576
|
75,522
|
| Revolving Loans Amortized Cost Basis |
239,416
|
231,852
|
| Total |
2,605,148
|
2,721,144
|
| Commercial real estate loans | Construction/land development | Non-performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
0
|
0
|
| Year Two |
0
|
4,281
|
| Year Three |
7,422
|
197
|
| Year Four |
0
|
434
|
| Year Five |
485
|
300
|
| Prior |
519
|
637
|
| Revolving Loans Amortized Cost Basis |
30
|
0
|
| Total |
8,456
|
5,849
|
| Commercial real estate loans | Agricultural |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
3,663
|
44,371
|
| Year Two |
44,679
|
46,846
|
| Year Three |
46,031
|
23,651
|
| Year Four |
22,744
|
49,060
|
| Year Five |
42,553
|
32,991
|
| Prior |
93,770
|
72,498
|
| Revolving Loans Amortized Cost Basis |
67,606
|
62,995
|
| Total |
321,046
|
332,412
|
| Commercial real estate loans | Agricultural | Performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
3,663
|
44,371
|
| Year Two |
44,679
|
46,846
|
| Year Three |
46,031
|
23,651
|
| Year Four |
22,744
|
49,060
|
| Year Five |
42,553
|
32,991
|
| Prior |
93,547
|
72,021
|
| Revolving Loans Amortized Cost Basis |
67,431
|
62,983
|
| Total |
320,648
|
331,923
|
| Commercial real estate loans | Agricultural | Non-performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
0
|
0
|
| Year Two |
0
|
0
|
| Year Three |
0
|
0
|
| Year Four |
0
|
0
|
| Year Five |
0
|
0
|
| Prior |
223
|
477
|
| Revolving Loans Amortized Cost Basis |
175
|
12
|
| Total |
398
|
489
|
| Residential real estate loans | Residential 1-4 family |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
78,297
|
299,334
|
| Year Two |
240,406
|
216,176
|
| Year Three |
217,450
|
249,480
|
| Year Four |
244,036
|
407,424
|
| Year Five |
387,486
|
271,880
|
| Prior |
731,251
|
485,085
|
| Revolving Loans Amortized Cost Basis |
201,448
|
204,955
|
| Total |
2,100,374
|
2,134,334
|
| Residential real estate loans | Residential 1-4 family | Performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
78,297
|
299,149
|
| Year Two |
240,008
|
215,558
|
| Year Three |
216,513
|
244,767
|
| Year Four |
239,672
|
400,643
|
| Year Five |
380,696
|
267,493
|
| Prior |
715,818
|
472,717
|
| Revolving Loans Amortized Cost Basis |
201,417
|
204,605
|
| Total |
2,072,421
|
2,104,932
|
| Residential real estate loans | Residential 1-4 family | Non-performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
0
|
185
|
| Year Two |
398
|
618
|
| Year Three |
937
|
4,713
|
| Year Four |
4,364
|
6,781
|
| Year Five |
6,790
|
4,387
|
| Prior |
15,433
|
12,368
|
| Revolving Loans Amortized Cost Basis |
31
|
350
|
| Total |
27,953
|
29,402
|
| Residential real estate loans | Multifamily residential |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
1,912
|
238,225
|
| Year Two |
238,285
|
55,750
|
| Year Three |
217,541
|
257,383
|
| Year Four |
195,565
|
379,075
|
| Year Five |
379,018
|
41,006
|
| Prior |
169,723
|
130,411
|
| Revolving Loans Amortized Cost Basis |
30,595
|
39,061
|
| Total |
1,232,639
|
1,140,911
|
| Residential real estate loans | Multifamily residential | Performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
1,912
|
238,225
|
| Year Two |
238,285
|
55,750
|
| Year Three |
217,541
|
257,383
|
| Year Four |
195,565
|
368,962
|
| Year Five |
368,655
|
41,006
|
| Prior |
168,911
|
129,599
|
| Revolving Loans Amortized Cost Basis |
30,595
|
39,061
|
| Total |
1,221,464
|
1,129,986
|
| Residential real estate loans | Multifamily residential | Non-performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
0
|
0
|
| Year Two |
0
|
0
|
| Year Three |
0
|
0
|
| Year Four |
0
|
10,113
|
| Year Five |
10,363
|
0
|
| Prior |
812
|
812
|
| Revolving Loans Amortized Cost Basis |
0
|
0
|
| Total |
11,175
|
10,925
|
| Total real estate |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
317,619
|
1,976,131
|
| Year Two |
2,012,063
|
1,741,009
|
| Year Three |
1,766,528
|
1,121,758
|
| Year Four |
1,037,971
|
2,278,973
|
| Year Five |
2,111,330
|
1,096,097
|
| Prior |
3,404,328
|
2,424,829
|
| Revolving Loans Amortized Cost Basis |
1,013,353
|
985,965
|
| Total |
11,663,192
|
11,624,762
|
| Consumer |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
56,151
|
285,203
|
| Year Two |
277,450
|
233,643
|
| Year Three |
225,346
|
158,949
|
| Year Four |
147,158
|
162,563
|
| Year Five |
153,048
|
142,858
|
| Prior |
391,595
|
267,504
|
| Revolving Loans Amortized Cost Basis |
4,188
|
3,026
|
| Total |
1,254,936
|
1,253,746
|
| Consumer | Performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
56,151
|
285,182
|
| Year Two |
277,381
|
232,580
|
| Year Three |
224,285
|
153,116
|
| Year Four |
142,120
|
160,625
|
| Year Five |
151,643
|
142,817
|
| Prior |
386,793
|
262,786
|
| Revolving Loans Amortized Cost Basis |
4,170
|
3,024
|
| Total |
1,242,543
|
1,240,130
|
| Consumer | Non-performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
0
|
21
|
| Year Two |
69
|
1,063
|
| Year Three |
1,061
|
5,833
|
| Year Four |
5,038
|
1,938
|
| Year Five |
1,405
|
41
|
| Prior |
4,802
|
4,718
|
| Revolving Loans Amortized Cost Basis |
18
|
2
|
| Total |
12,393
|
13,616
|
| Commercial and industrial |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
36,954
|
483,726
|
| Year Two |
469,328
|
170,209
|
| Year Three |
166,505
|
471,285
|
| Year Four |
173,785
|
175,061
|
| Year Five |
114,584
|
71,891
|
| Prior |
395,569
|
331,072
|
| Revolving Loans Amortized Cost Basis |
815,542
|
519,157
|
| Total |
2,172,267
|
2,222,401
|
| Commercial and industrial | Performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
36,954
|
482,817
|
| Year Two |
468,411
|
129,624
|
| Year Three |
125,233
|
471,177
|
| Year Four |
173,221
|
174,639
|
| Year Five |
114,146
|
71,256
|
| Prior |
393,553
|
329,475
|
| Revolving Loans Amortized Cost Basis |
794,772
|
499,046
|
| Total |
2,106,290
|
2,158,034
|
| Commercial and industrial | Non-performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
0
|
909
|
| Year Two |
917
|
40,585
|
| Year Three |
41,272
|
108
|
| Year Four |
564
|
422
|
| Year Five |
438
|
635
|
| Prior |
2,016
|
1,597
|
| Revolving Loans Amortized Cost Basis |
20,770
|
20,111
|
| Total |
65,977
|
64,367
|
| Agricultural & other |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
65,211
|
75,856
|
| Year Two |
19,648
|
15,543
|
| Year Three |
13,153
|
6,046
|
| Year Four |
5,647
|
39,098
|
| Year Five |
38,051
|
26,758
|
| Prior |
65,798
|
46,658
|
| Revolving Loans Amortized Cost Basis |
335,725
|
375,341
|
| Total |
543,233
|
585,300
|
| Agricultural & other | Performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
65,211
|
75,856
|
| Year Two |
19,648
|
15,385
|
| Year Three |
12,995
|
5,938
|
| Year Four |
5,550
|
38,786
|
| Year Five |
37,739
|
26,715
|
| Prior |
65,134
|
46,132
|
| Revolving Loans Amortized Cost Basis |
335,725
|
375,264
|
| Total |
542,002
|
584,076
|
| Agricultural & other | Non-performing |
|
|
| Financing Receivable Allowance For Credit Losses [Line Items] |
|
|
| Year One |
0
|
0
|
| Year Two |
0
|
158
|
| Year Three |
158
|
108
|
| Year Four |
97
|
312
|
| Year Five |
312
|
43
|
| Prior |
664
|
526
|
| Revolving Loans Amortized Cost Basis |
0
|
77
|
| Total |
$ 1,231
|
$ 1,224
|