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Loans and Allowance for Credit Losses - Allowance for Credit Losses (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | $ 123,654 | $ 133,546 | $ 117,718 | $ 102,906 | $ 102,906
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 27,205 |
Charge-offs | (9,789) | (4,598) | (20,821) | (15,824) | (33,267)
Recoveries | 1,004 | 622 | 3,332 | 2,010 | 3,115
Provision for credit losses | 11,243 | 4,767 | 25,883 | 18,040 |
Ending Balance | 126,112 | 134,337 | 126,112 | 134,337 | 117,718
Time and Demand Loans |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (8,161) |  | (16,147)
Recoveries |  |  | 405 |  | 260
Commercial Credit Cards |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (183) |  | (105)
Recoveries |  |  | 5 |  | 13
Senior Lien |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (137) |  | (246)
Recoveries |  |  | 150 |  | 177
Junior Lien |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (224) |  | (315)
Recoveries |  |  | 71 |  | 70
Multifamily |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | 0 |  | 0
Recoveries |  |  | 0 |  | 0
Nonowner Occupied Commercial Real Estate |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (507) |  | (4,705)
Recoveries |  |  | 53 |  | 127
Owner Occupied Commercial Real Estate |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (1,540) |  | (1,572)
Recoveries |  |  | 113 |  | 24
Automobiles |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (5,552) |  | (5,587)
Recoveries |  |  | 1,937 |  | 1,832
Consumer Credit Cards |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (348) |  | (290)
Recoveries |  |  | 78 |  | 87
Other Consumer Loans |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (1,248) |  | (1,353)
Recoveries |  |  | 291 |  | 300
Construction Residential |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | 0 |  | 0
Recoveries |  |  | 0 |  | 0
Construction Other |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (35) |  | 0
Recoveries |  |  | 6 |  | 0
Time and Demand Loans Other |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (1,651) |  | (2,410)
Recoveries |  |  | 151 |  | 225
Equipment Finance |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Charge-offs |  |  | (1,235) |  | (537)
Recoveries |  |  | 72 |  | 0
Commercial, financial, agricultural and other [Member] |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 30,608 | 41,714 | 27,996 | 22,650 | 22,650
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 19,417 |
Charge-offs | (5,980) | (1,762) | (11,230) | (9,102) |
Recoveries | 110 | 98 | 633 | 352 |
Provision for credit losses | 5,965 | (2,645) | 13,304 | 4,088 |
Ending Balance | 30,703 | 37,405 | 30,703 | 37,405 | 27,996
Commercial, financial, agricultural and other [Member] | Time and Demand Loans |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 23,589 | 37,873 | 22,819 | 20,040 | 20,040
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 19,417 |
Charge-offs | (4,784) | (954) | (8,161) | (7,424) |
Recoveries | 11 | 46 | 405 | 214 |
Provision for credit losses | 3,730 | (3,914) | 7,483 | 804 |
Ending Balance | 22,546 | 33,051 | 22,546 | 33,051 | 22,819
Commercial, financial, agricultural and other [Member] | Commercial Credit Cards |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 244 | 320 | 278 | 335 | 335
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 0 |
Charge-offs | (81) | (28) | (183) | (63) |
Recoveries | 5 | 6 | 5 | 13 |
Provision for credit losses | 69 | 9 | 137 | 22 |
Ending Balance | 237 | 307 | 237 | 307 | 278
Commercial, financial, agricultural and other [Member] | Time and Demand Loans Other |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 1,483 | 1,447 | 1,500 | 1,189 | 1,189
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 0 |
Charge-offs | (594) | (780) | (1,651) | (1,570) |
Recoveries | 58 | 46 | 151 | 125 |
Provision for credit losses | 443 | 707 | 1,390 | 1,676 |
Ending Balance | 1,390 | 1,420 | 1,390 | 1,420 | 1,500
Commercial, financial, agricultural and other [Member] | Equipment Finance |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 5,292 | 2,074 | 3,399 | 1,086 | 1,086
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 0 |
Charge-offs | (521) | 0 | (1,235) | (45) |
Recoveries | 36 | 0 | 72 | 0 |
Provision for credit losses | 1,723 | 553 | 4,294 | 1,586 |
Ending Balance | 6,530 | 2,627 | 6,530 | 2,627 | 3,399
Residential real estate [Member] |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 22,173 | 23,740 | 23,901 | 21,412 | 21,412
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 527 |
Charge-offs | (106) | (304) | (361) | (384) |
Recoveries | 51 | 57 | 221 | 128 |
Provision for credit losses | 521 | 447 | (1,122) | 2,257 |
Ending Balance | 22,639 | 23,940 | 22,639 | 23,940 | 23,901
Residential real estate [Member] | Senior Lien |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 15,745 | 16,563 | 16,975 | 14,822 | 14,822
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 197 |
Charge-offs | (28) | (107) | (137) | (124) |
Recoveries | 37 | 22 | 150 | 65 |
Provision for credit losses | 249 | 553 | (985) | 2,071 |
Ending Balance | 16,003 | 17,031 | 16,003 | 17,031 | 16,975
Residential real estate [Member] | Junior Lien |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 6,428 | 7,177 | 6,926 | 6,590 | 6,590
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 330 |
Charge-offs | (78) | (197) | (224) | (260) |
Recoveries | 14 | 35 | 71 | 63 |
Provision for credit losses | 272 | (106) | (137) | 186 |
Ending Balance | 6,636 | 6,909 | 6,636 | 6,909 | 6,926
Commercial Real Estate [Member] |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 42,544 | 38,927 | 37,071 | 28,804 | 28,804
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 6,971 |
Charge-offs | (1,423) | (172) | (2,047) | (1,689) |
Recoveries | 42 | 6 | 166 | 142 |
Provision for credit losses | 3,519 | 4,338 | 9,492 | 8,871 |
Ending Balance | 44,682 | 43,099 | 44,682 | 43,099 | 37,071
Commercial Real Estate [Member] | Multifamily |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 5,206 | 5,775 | 5,233 | 4,726 | 4,726
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 234 |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
Provision for credit losses | (151) | 46 | (178) | 861 |
Ending Balance | 5,055 | 5,821 | 5,055 | 5,821 | 5,233
Commercial Real Estate [Member] | Nonowner Occupied Commercial Real Estate |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 25,036 | 21,710 | 19,995 | 16,426 | 16,426
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 2,739 |
Charge-offs | (37) | (172) | (507) | (172) |
Recoveries | 5 | 2 | 53 | 126 |
Provision for credit losses | 2,942 | 3,952 | 8,405 | 6,373 |
Ending Balance | 27,946 | 25,492 | 27,946 | 25,492 | 19,995
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 12,302 | 11,442 | 11,843 | 7,652 | 7,652
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 3,998 |
Charge-offs | (1,386) | 0 | (1,540) | (1,517) |
Recoveries | 37 | 4 | 113 | 16 |
Provision for credit losses | 728 | 340 | 1,265 | 1,637 |
Ending Balance | 11,681 | 11,786 | 11,681 | 11,786 | 11,843
Loans to individuals [Member] |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 21,940 | 21,437 | 21,332 | 21,218 | 21,218
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 3 |
Charge-offs | (2,280) | (2,360) | (7,148) | (4,649) |
Recoveries | 801 | 461 | 2,306 | 1,388 |
Provision for credit losses | 1,447 | 1,851 | 5,418 | 3,429 |
Ending Balance | 21,908 | 21,389 | 21,908 | 21,389 | 21,332
Loans to individuals [Member] | Automobiles |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 19,676 | 19,258 | 19,142 | 18,819 | 18,819
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 3 |
Charge-offs | (1,827) | (1,883) | (5,552) | (3,469) |
Recoveries | 676 | 412 | 1,937 | 1,114 |
Provision for credit losses | 1,067 | 1,503 | 4,065 | 2,823 |
Ending Balance | 19,592 | 19,290 | 19,592 | 19,290 | 19,142
Loans to individuals [Member] | Consumer Credit Cards |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 346 | 375 | 372 | 412 | 412
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 0 |
Charge-offs | (120) | (59) | (348) | (205) |
Recoveries | 33 | 16 | 78 | 63 |
Provision for credit losses | 81 | 38 | 238 | 100 |
Ending Balance | 340 | 370 | 340 | 370 | 372
Loans to individuals [Member] | Other Consumer Loans |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 1,918 | 1,804 | 1,818 | 1,987 | 1,987
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 0 |
Charge-offs | (333) | (418) | (1,248) | (975) |
Recoveries | 92 | 33 | 291 | 211 |
Provision for credit losses | 299 | 310 | 1,115 | 506 |
Ending Balance | 1,976 | 1,729 | 1,976 | 1,729 | 1,818
Real estate construction [Member] |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 6,389 | 7,728 | 7,418 | 8,822 | 8,822
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 287 |
Charge-offs | 0 | 0 | (35) | 0 |
Recoveries | 0 | 0 | 6 | 0 |
Provision for credit losses | (209) | 776 | (1,209) | (605) |
Ending Balance | 6,180 | 8,504 | 6,180 | 8,504 | 7,418
Real estate construction [Member] | Construction Residential |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 372 | 1,583 | 970 | 2,462 | 2,462
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 60 |
Charge-offs | 0 | 0 | 0 | 0 |
Recoveries | 0 | 0 | 0 | 0 |
Provision for credit losses | (84) | (431) | (682) | (1,370) |
Ending Balance | 288 | 1,152 | 288 | 1,152 | 970
Real estate construction [Member] | Construction Other |  |  |  |  |
Accounts Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Beginning Balance | 6,017 | 6,145 | 6,448 | 6,360 | 6,360
Financing Receivable, Purchased with Credit Deterioration, Allowance for Credit Loss at Acquisition Date |  | 0 |  | 227 |
Charge-offs | 0 | 0 | (35) | 0 |
Recoveries | 0 | 0 | 6 | 0 |
Provision for credit losses | (125) | 1,207 | (527) | 765 |
Ending Balance | $ 5,892 | $ 7,352 | $ 5,892 | $ 7,352 | $ 6,448

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