XML 82 R62.htm IDEA: XBRL DOCUMENT
v3.25.1

Loans and Allowance for Credit Losses - Loans by Credit Risk Rating, Segregated by Class of Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | $ 17,094,078 | $ 17,005,937
Loans other than pass or current |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 496,351 | 1,326,768
Fiscal year before current fiscal year | 1,245,041 | 1,299,057
Two years before current fiscal year | 1,193,542 | 2,631,268
Three years before current fiscal year | 2,522,583 | 1,543,866
Four years before current fiscal year | 1,484,349 | 679,210
Five years before current fiscal year | 1,903,186 | 1,355,121
Lines of Credit (“LOC”) Amortized Cost Basis | 8,248,839 | 8,170,447
LOC Converted to Term Loans Amortized Cost Basis | 187 | 200
Total | 17,094,078 | 17,005,937
Consumer: |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 276,878 | 308,994
Consumer: | Credit cards |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 179,680 | 181,675
Current-period consumer - credit cards gross charge-offs , Year 1 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 2 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 3 | 0 | 0
Current-period consumer - credit cards gross charge-offs, Year 4 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 5 | 0 | 0
Current-period consumer - credit cards gross charge-offs , After Year 5 | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 1,460 | 6,437
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 1,460 | 6,437
Consumer: | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 97,198 | 127,319
Current-period consumer - credit cards gross charge-offs , Year 1 | 0 | 192
Current-period consumer - credit cards gross charge-offs , Year 2 | 450 | 680
Current-period consumer - credit cards gross charge-offs , Year 3 | 126 | 553
Current-period consumer - credit cards gross charge-offs, Year 4 | 368 | 98
Current-period consumer - credit cards gross charge-offs , Year 5 | 32 | 13
Current-period consumer - credit cards gross charge-offs , After Year 5 | 36 | 10
Lines of Credit (“LOC”) Amortized Cost Basis | 58 | 292
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 1,070 | 1,838
Real Estate: |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 13,477,000 | 13,391,531
Real Estate: | Construction and development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 2,778,245 | 2,789,249
Real Estate: | Construction and development | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 18,222 | 50,288
Fiscal year before current fiscal year | 44,186 | 113,056
Two years before current fiscal year | 110,827 | 71,908
Three years before current fiscal year | 62,199 | 28,921
Four years before current fiscal year | 26,930 | 18,187
Five years before current fiscal year | 36,214 | 20,653
Lines of Credit (“LOC”) Amortized Cost Basis | 2,461,129 | 2,468,334
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 2,759,707 | 2,771,347
Real Estate: | Construction and development | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 50
Three years before current fiscal year | 49 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 370 | 376
Lines of Credit (“LOC”) Amortized Cost Basis | 2,869 | 2,862
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 3,288 | 3,288
Real Estate: | Construction and development | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 59
Fiscal year before current fiscal year | 59 | 409
Two years before current fiscal year | 63 | 66
Three years before current fiscal year | 102 | 532
Four years before current fiscal year | 457 | 0
Five years before current fiscal year | 79 | 88
Lines of Credit (“LOC”) Amortized Cost Basis | 14,490 | 13,460
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 15,250 | 14,614
Real Estate: | Construction and development | Doubtful and loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 0 | 0
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 0 | 0
Real Estate: | Construction and development | Risk rate 5, 6, and 7 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 18,222 | 50,347
Fiscal year before current fiscal year | 44,245 | 113,465
Two years before current fiscal year | 110,890 | 72,024
Three years before current fiscal year | 62,350 | 29,453
Four years before current fiscal year | 27,387 | 18,187
Five years before current fiscal year | 36,663 | 21,117
Lines of Credit (“LOC”) Amortized Cost Basis | 2,478,488 | 2,484,656
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 2,778,245 | 2,789,249
Current-period consumer - credit cards gross charge-offs , Year 1 | 0 | 162
Current-period consumer - credit cards gross charge-offs , Year 2 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 3 | 0 | 0
Current-period consumer - credit cards gross charge-offs, Year 4 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 5 | 0 | 0
Current-period consumer - credit cards gross charge-offs , After Year 5 | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 0 | 521
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 0 | 683
Real Estate: | Single family residential |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 2,647,451 | 2,689,946
Real Estate: | Other commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 8,051,304 | 7,912,336
Real Estate: | Other commercial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 270,315 | 603,206
Fiscal year before current fiscal year | 591,253 | 490,128
Two years before current fiscal year | 442,670 | 1,519,950
Three years before current fiscal year | 1,444,686 | 1,021,169
Four years before current fiscal year | 1,001,908 | 419,769
Five years before current fiscal year | 989,293 | 646,399
Lines of Credit (“LOC”) Amortized Cost Basis | 2,829,154 | 2,800,863
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 7,569,279 | 7,501,484
Real Estate: | Other commercial | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 9,479
Fiscal year before current fiscal year | 9,693 | 16,272
Two years before current fiscal year | 16,260 | 12,401
Three years before current fiscal year | 35,702 | 9,494
Four years before current fiscal year | 5,857 | 1,472
Five years before current fiscal year | 18,346 | 12,754
Lines of Credit (“LOC”) Amortized Cost Basis | 122,853 | 111,466
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 208,711 | 173,338
Real Estate: | Other commercial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 12,093
Fiscal year before current fiscal year | 13,062 | 17,099
Two years before current fiscal year | 19,860 | 11,399
Three years before current fiscal year | 10,246 | 3,063
Four years before current fiscal year | 2,644 | 12,073
Five years before current fiscal year | 45,275 | 31,126
Lines of Credit (“LOC”) Amortized Cost Basis | 182,227 | 150,661
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 273,314 | 237,514
Real Estate: | Other commercial | Doubtful and loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 0 | 0
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 0 | 0
Real Estate: | Other commercial | Risk rate 5, 6, and 7 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 270,315 | 624,778
Fiscal year before current fiscal year | 614,008 | 523,499
Two years before current fiscal year | 478,790 | 1,543,750
Three years before current fiscal year | 1,490,634 | 1,033,726
Four years before current fiscal year | 1,010,409 | 433,314
Five years before current fiscal year | 1,052,914 | 690,279
Lines of Credit (“LOC”) Amortized Cost Basis | 3,134,234 | 3,062,990
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 8,051,304 | 7,912,336
Current-period consumer - credit cards gross charge-offs , Year 1 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 2 | 0 | 5,202
Current-period consumer - credit cards gross charge-offs , Year 3 | 0 | 38
Current-period consumer - credit cards gross charge-offs, Year 4 | 0 | 15
Current-period consumer - credit cards gross charge-offs , Year 5 | 0 | 0
Current-period consumer - credit cards gross charge-offs , After Year 5 | 56 | 1
Lines of Credit (“LOC”) Amortized Cost Basis | 4,211 | 168
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 4,267 | 5,424
Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 2,637,150 | 2,695,329
Commercial | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 2,372,681 | 2,434,175
Commercial | Commercial | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 94,983 | 245,945
Fiscal year before current fiscal year | 223,010 | 253,518
Two years before current fiscal year | 214,831 | 257,227
Three years before current fiscal year | 236,156 | 118,910
Four years before current fiscal year | 108,831 | 28,620
Five years before current fiscal year | 55,817 | 44,606
Lines of Credit (“LOC”) Amortized Cost Basis | 1,344,729 | 1,411,467
LOC Converted to Term Loans Amortized Cost Basis | 187 | 200
Total | 2,278,544 | 2,360,493
Commercial | Commercial | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 112
Fiscal year before current fiscal year | 736 | 583
Two years before current fiscal year | 2,556 | 523
Three years before current fiscal year | 593 | 313
Four years before current fiscal year | 322 | 6
Five years before current fiscal year | 1,058 | 1,025
Lines of Credit (“LOC”) Amortized Cost Basis | 28,691 | 7,498
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 33,956 | 10,060
Commercial | Commercial | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 32 | 10,743
Fiscal year before current fiscal year | 13,909 | 2,035
Two years before current fiscal year | 3,389 | 8,317
Three years before current fiscal year | 7,457 | 2,876
Four years before current fiscal year | 2,866 | 2,954
Five years before current fiscal year | 7,759 | 5,923
Lines of Credit (“LOC”) Amortized Cost Basis | 24,766 | 30,771
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 60,178 | 63,619
Commercial | Commercial | Doubtful and loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 3
Three years before current fiscal year | 3 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 0 | 0
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 3 | 3
Commercial | Commercial | Risk rate 5, 6, and 7 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 95,015 | 256,800
Fiscal year before current fiscal year | 237,655 | 256,136
Two years before current fiscal year | 220,776 | 266,070
Three years before current fiscal year | 244,209 | 122,099
Four years before current fiscal year | 112,019 | 31,580
Five years before current fiscal year | 64,634 | 51,554
Lines of Credit (“LOC”) Amortized Cost Basis | 1,398,186 | 1,449,736
LOC Converted to Term Loans Amortized Cost Basis | 187 | 200
Total | 2,372,681 | 2,434,175
Current-period consumer - credit cards gross charge-offs , Year 1 | 0 | 536
Current-period consumer - credit cards gross charge-offs , Year 2 | 28 | 1,087
Current-period consumer - credit cards gross charge-offs , Year 3 | 404 | 5,311
Current-period consumer - credit cards gross charge-offs, Year 4 | 874 | 3,500
Current-period consumer - credit cards gross charge-offs , Year 5 | 641 | 913
Current-period consumer - credit cards gross charge-offs , After Year 5 | 186 | 1,994
Lines of Credit (“LOC”) Amortized Cost Basis | 2,110 | 13,289
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 4,243 | 26,630
Commercial | Agricultural |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 264,469 | 261,154
Commercial | Agricultural | Pass |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 24,673 | 30,103
Fiscal year before current fiscal year | 23,394 | 23,222
Two years before current fiscal year | 19,784 | 20,673
Three years before current fiscal year | 17,619 | 8,220
Four years before current fiscal year | 6,247 | 2,825
Five years before current fiscal year | 3,380 | 1,209
Lines of Credit (“LOC”) Amortized Cost Basis | 166,247 | 169,849
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 261,344 | 256,101
Commercial | Agricultural | Special mention |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 4 | 111
Three years before current fiscal year | 139 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 4 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 1,436 | 2,299
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 1,583 | 2,410
Commercial | Agricultural | Substandard |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 1,222
Fiscal year before current fiscal year | 214 | 14
Two years before current fiscal year | 143 | 29
Three years before current fiscal year | 40 | 0
Four years before current fiscal year | 26 | 123
Five years before current fiscal year | 162 | 14
Lines of Credit (“LOC”) Amortized Cost Basis | 957 | 1,241
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 1,542 | 2,643
Commercial | Agricultural | Doubtful and loss |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 0 | 0
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 0 | 0
Commercial | Agricultural | Risk rate 5, 6, and 7 |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 24,673 | 31,325
Fiscal year before current fiscal year | 23,608 | 23,236
Two years before current fiscal year | 19,931 | 20,813
Three years before current fiscal year | 17,798 | 8,220
Four years before current fiscal year | 6,273 | 2,948
Five years before current fiscal year | 3,546 | 1,223
Lines of Credit (“LOC”) Amortized Cost Basis | 168,640 | 173,389
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 264,469 | 261,154
Current-period consumer - credit cards gross charge-offs , Year 1 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 2 | 0 | 222
Current-period consumer - credit cards gross charge-offs , Year 3 | 0 | 0
Current-period consumer - credit cards gross charge-offs, Year 4 | 0 | 8
Current-period consumer - credit cards gross charge-offs , Year 5 | 0 | 6
Current-period consumer - credit cards gross charge-offs , After Year 5 | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis |  | 1
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 0 | 237
Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 703,050 | 610,083
Current |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 16,941,398 | 16,876,043
Current | Consumer: |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 273,686 | 304,402
Current | Consumer: | Credit cards |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 177,472 | 179,216
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 177,472 | 179,216
Current | Consumer: | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 14,694 | 63,986
Fiscal year before current fiscal year | 29,273 | 17,227
Two years before current fiscal year | 14,353 | 17,877
Three years before current fiscal year | 14,538 | 4,713
Four years before current fiscal year | 3,803 | 1,304
Five years before current fiscal year | 1,679 | 893
Lines of Credit (“LOC”) Amortized Cost Basis | 17,874 | 19,186
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 96,214 | 125,186
Current | Real Estate: |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 13,359,288 | 13,297,599
Current | Real Estate: | Construction and development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 2,764,886 | 2,778,387
Current | Real Estate: | Single family residential |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 58,690 | 225,040
Fiscal year before current fiscal year | 225,634 | 324,605
Two years before current fiscal year | 310,195 | 559,278
Three years before current fiscal year | 545,289 | 314,700
Four years before current fiscal year | 294,653 | 187,752
Five years before current fiscal year | 695,559 | 543,590
Lines of Credit (“LOC”) Amortized Cost Basis | 473,824 | 484,317
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 2,603,844 | 2,639,282
Current | Real Estate: | Other commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 7,990,558 | 7,879,930
Current | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 2,605,377 | 2,664,238
Current | Commercial | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 2,341,818 | 2,403,581
Current | Commercial | Agricultural |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 263,559 | 260,657
Current | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 14,736 | 71,671
Fiscal year before current fiscal year | 68,197 | 35,574
Two years before current fiscal year | 35,157 | 136,416
Three years before current fiscal year | 135,869 | 26,930
Four years before current fiscal year | 26,705 | 1,287
Five years before current fiscal year | 29,918 | 30,085
Lines of Credit (“LOC”) Amortized Cost Basis | 392,465 | 307,841
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 703,047 | 609,804
30-89 days past due | Consumer: | Credit cards |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 1,628 | 1,824
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 1,628 | 1,824
30-89 days past due | Consumer: | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 6 | 515
Fiscal year before current fiscal year | 149 | 176
Two years before current fiscal year | 203 | 701
Three years before current fiscal year | 445 | 59
Four years before current fiscal year | 22 | 14
Five years before current fiscal year | 4 | 2
Lines of Credit (“LOC”) Amortized Cost Basis | 19 | 285
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 848 | 1,752
30-89 days past due | Real Estate: | Single family residential |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 1,205
Fiscal year before current fiscal year | 1,332 | 4,201
Two years before current fiscal year | 1,695 | 9,578
Three years before current fiscal year | 8,582 | 3,316
Four years before current fiscal year | 2,076 | 1,525
Five years before current fiscal year | 12,484 | 12,389
Lines of Credit (“LOC”) Amortized Cost Basis | 1,907 | 2,437
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 28,076 | 34,651
30-89 days past due | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 276
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 0 | 0
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 0 | 276
90+ days past due |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 106,791 | 81,698
90+ days past due | Consumer: |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 716 | 1,016
90+ days past due | Consumer: | Credit cards |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 580 | 635
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 580 | 635
90+ days past due | Consumer: | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 85
Fiscal year before current fiscal year | 60 | 56
Two years before current fiscal year | 26 | 183
Three years before current fiscal year | 12 | 20
Four years before current fiscal year | 38 | 0
Five years before current fiscal year | 0 | 35
Lines of Credit (“LOC”) Amortized Cost Basis | 0 | 2
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 136 | 381
90+ days past due | Real Estate: |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 78,980 | 53,516
90+ days past due | Real Estate: | Construction and development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 12,933 | 10,530
90+ days past due | Real Estate: | Single family residential |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 1,016
Fiscal year before current fiscal year | 880 | 606
Two years before current fiscal year | 1,526 | 4,578
Three years before current fiscal year | 2,857 | 630
Four years before current fiscal year | 964 | 1,299
Five years before current fiscal year | 5,782 | 3,951
Lines of Credit (“LOC”) Amortized Cost Basis | 3,522 | 3,933
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 15,531 | 16,013
90+ days past due | Real Estate: | Other commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 50,516 | 26,973
90+ days past due | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 27,092 | 27,163
90+ days past due | Commercial | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 26,367 | 27,059
90+ days past due | Commercial | Agricultural |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total | 725 | 104
90+ days past due | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 3 | 3
Lines of Credit (“LOC”) Amortized Cost Basis | 0 | 0
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 3 | 3
30 + days past due | Consumer: | Credit cards |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 0 | 0
Fiscal year before current fiscal year | 0 | 0
Two years before current fiscal year | 0 | 0
Three years before current fiscal year | 0 | 0
Four years before current fiscal year | 0 | 0
Five years before current fiscal year | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 179,680 | 181,675
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 179,680 | 181,675
30 + days past due | Consumer: | Other consumer |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 14,700 | 64,586
Fiscal year before current fiscal year | 29,482 | 17,459
Two years before current fiscal year | 14,582 | 18,761
Three years before current fiscal year | 14,995 | 4,792
Four years before current fiscal year | 3,863 | 1,318
Five years before current fiscal year | 1,683 | 930
Lines of Credit (“LOC”) Amortized Cost Basis | 17,893 | 19,473
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 97,198 | 127,319
30 + days past due | Real Estate: | Single family residential |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 58,690 | 227,261
Fiscal year before current fiscal year | 227,846 | 329,412
Two years before current fiscal year | 313,416 | 573,434
Three years before current fiscal year | 556,728 | 318,646
Four years before current fiscal year | 297,693 | 190,576
Five years before current fiscal year | 713,825 | 559,930
Lines of Credit (“LOC”) Amortized Cost Basis | 479,253 | 490,687
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 2,647,451 | 2,689,946
Current-period consumer - credit cards gross charge-offs , Year 1 | 0 | 3
Current-period consumer - credit cards gross charge-offs , Year 2 | 13 | 190
Current-period consumer - credit cards gross charge-offs , Year 3 | 0 | 231
Current-period consumer - credit cards gross charge-offs, Year 4 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 5 | 42 | 37
Current-period consumer - credit cards gross charge-offs , After Year 5 | 0 | 134
Lines of Credit (“LOC”) Amortized Cost Basis | 103 | 247
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 158 | 842
30 + days past due | Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Current fiscal year | 14,736 | 71,671
Fiscal year before current fiscal year | 68,197 | 35,850
Two years before current fiscal year | 35,157 | 136,416
Three years before current fiscal year | 135,869 | 26,930
Four years before current fiscal year | 26,705 | 1,287
Five years before current fiscal year | 29,921 | 30,088
Lines of Credit (“LOC”) Amortized Cost Basis | 392,465 | 307,841
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | 703,050 | 610,083
Current-period consumer - credit cards gross charge-offs , Year 1 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 2 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 3 | 0 | 0
Current-period consumer - credit cards gross charge-offs, Year 4 | 0 | 0
Current-period consumer - credit cards gross charge-offs , Year 5 | 0 | 0
Current-period consumer - credit cards gross charge-offs , After Year 5 | 0 | 0
Lines of Credit (“LOC”) Amortized Cost Basis | 63 | 473
LOC Converted to Term Loans Amortized Cost Basis | 0 | 0
Total | $ 63 | $ 473

X
- Definition Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Writeoff, Originated Five Or More Years Before Latest Fiscal Year + References No definition available. + Details
Name: | sfnc_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestWriteoffOriginatedFiveOrMoreYearsBeforeLatestFiscalYear
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Writeoff, Originated Four Years Before Latest Fiscal Year + References No definition available. + Details
Name: | sfnc_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestWriteoffOriginatedFourYearsBeforeLatestFiscalYear
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Writeoff, Originated In Current Fiscal Year + References No definition available. + Details
Name: | sfnc_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestWriteoffOriginatedInCurrentFiscalYear
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Writeoff, Originated In Fiscal Year Before Latest Fiscal Year + References No definition available. + Details
Name: | sfnc_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestWriteoffOriginatedInFiscalYearBeforeLatestFiscalYear
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Writeoff, Originated Three Years Before Latest Fiscal Year + References No definition available. + Details
Name: | sfnc_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestWriteoffOriginatedThreeYearsBeforeLatestFiscalYear
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest, Writeoff, Originated Two Years Before Latest Fiscal Year + References No definition available. + Details
Name: | sfnc_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterestWriteoffOriginatedTwoYearsBeforeLatestFiscalYear
Namespace Prefix: | sfnc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestBeforeAllowanceForCreditLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestOriginatedMoreThanFiveYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolving
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of revolving financing receivable converted to term loan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of writeoff of revolving financing receivable converted to term loan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6A -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6A + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingConvertedToTermLoanWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, excluding accrued interest, of writeoff of financing receivable that can be withdrawn, repaid, and redrawn. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestRevolvingWriteoff
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFiveOriginatedFourYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearFourOriginatedThreeYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated in current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearOneOriginatedCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest, of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearThreeOriginatedTwoYearsBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost excluding accrued interest of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestYearTwoOriginatedFiscalYearBeforeCurrentFiscalYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 29 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-29 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479294/326-20-55-79 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=sfnc_CriticizedAndPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CreditCardReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfnc_OtherConsumerLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=sfnc_RealEstatePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_CriticizedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=srt_SingleFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfnc_OtherCommercialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfnc_CommercialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=sfnc_AgriculturalLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_UnallocatedFinancingReceivablesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=sfnc_FinancialAsset30to89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=sfnc_FinancingReceivablesEqualToGreaterThan30DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |