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Allowance for Credit Losses - Summary of Activity in Allowance for Loan 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
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 123,517 | $ 117,329 | $ 121,522 | $ 105,680 | $ 105,680
Charge-offs | (444) | (5,357) | (3,329) | (7,391) | (8,140)
Recoveries | 367 | 720 | 897 | 1,108 | 1,527
Provision (benefit) | 320 | 3,120 | 4,670 | 16,415 | 22,455
Ending balance | 123,760 | 115,812 | 123,760 | 115,812 | 121,522
Off-Balance Sheet, Credit Loss, Liability [Roll Forward] |  |  |  |  |
Beginning balance | 6,210 | 4,865 | 5,850 | 4,315 | 4,315
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision for (benefit from) credit losses | (100) | 1,035 | 260 | 1,585 | 1,535
Ending balance | 6,110 | 5,900 | 6,110 | 5,900 | 5,850
Credit Loss [Roll Forward] |  |  |  |  |
Beginning balance | 129,727 | 122,194 | 127,372 | 109,995 | 109,995
Charge-offs | (444) | (5,357) | (3,329) | (7,391) | (8,140)
Recoveries | 367 | 720 | 897 | 1,108 | 1,527
Provision for (benefit from) credit losses | 220 | 4,155 | 4,930 | 18,000 | 23,990
Ending balance | 129,870 | 121,712 | 129,870 | 121,712 | 127,372
Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 73,032 | 71,016 | 68,864 | 61,381 | 61,381
Charge-offs | 0 | (3,608) | 0 | (3,608) | (3,637)
Recoveries | 1 | 0 | 2 | 1 | 2
Provision (benefit) | (1,694) | (733) | 2,473 | 8,901 | 11,118
Ending balance | 71,339 | 66,675 | 71,339 | 66,675 | 68,864
Consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 27,674 | 26,513 | 27,453 | 24,639 | 24,639
Charge-offs | (170) | (133) | (605) | (480) | (624)
Recoveries | 259 | 628 | 480 | 807 | 1,175
Provision (benefit) | (259) | (390) | 176 | 1,652 | 2,263
Ending balance | 27,504 | 26,618 | 27,504 | 26,618 | 27,453
Commercial and industrial |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 12,128 | 11,647 | 12,750 | 13,597 | 13,597
Charge-offs | (274) | (1,616) | (1,274) | (3,303) | (3,879)
Recoveries | 106 | 91 | 389 | 267 | 316
Provision (benefit) | 2,493 | 2,168 | 2,588 | 1,729 | 2,716
Ending balance | 14,453 | 12,290 | 14,453 | 12,290 | 12,750
Construction |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 7,466 | 7,031 | 8,856 | 5,142 | 5,142
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | (347) | 1,066 | (1,737) | 2,955 | 3,714
Ending balance | 7,119 | 8,097 | 7,119 | 8,097 | 8,856
Agriculture production |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 3,180 | 1,105 | 3,589 | 906 | 906
Charge-offs | 0 | 0 | (1,450) | 0 | 0
Recoveries | 1 | 1 | 26 | 33 | 34
Provision (benefit) | 131 | 1,019 | 1,147 | 1,186 | 2,649
Ending balance | 3,312 | 2,125 | 3,312 | 2,125 | 3,589
Leases |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 37 | 17 | 10 | 15 | 15
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | (4) | (10) | 23 | (8) | (5)
Ending balance | 33 | 7 | 33 | 7 | 10
CRE non-owner occupied | Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 37,155 | 33,042 | 35,077 | 30,962 | 30,962
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | (949) | 681 | 1,129 | 2,761 | 4,115
Ending balance | 36,206 | 33,723 | 36,206 | 33,723 | 35,077
CRE owner occupied | Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 15,873 | 20,208 | 15,081 | 14,014 | 14,014
Charge-offs | 0 | (3,608) | 0 | (3,608) | (3,637)
Recoveries | 1 | 0 | 2 | 1 | 2
Provision (benefit) | (492) | (2,097) | 299 | 4,096 | 4,702
Ending balance | 15,382 | 14,503 | 15,382 | 14,503 | 15,081
Multifamily | Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 15,973 | 14,075 | 14,418 | 13,132 | 13,132
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | (238) | 164 | 1,317 | 1,107 | 1,286
Ending balance | 15,735 | 14,239 | 15,735 | 14,239 | 14,418
Farmland | Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 4,031 | 3,691 | 4,288 | 3,273 | 3,273
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | (15) | 519 | (272) | 937 | 1,015
Ending balance | 4,016 | 4,210 | 4,016 | 4,210 | 4,288
SFR 1-4 1st DT liens | Consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 14,604 | 13,134 | 14,009 | 11,268 | 11,268
Charge-offs | 0 | 0 | (26) | 0 | 0
Recoveries | 0 | 262 | 0 | 262 | 262
Provision (benefit) | (238) | 139 | 383 | 2,005 | 2,479
Ending balance | 14,366 | 13,535 | 14,366 | 13,535 | 14,009
SFR HELOCs and junior liens | Consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 10,087 | 10,608 | 10,273 | 11,413 | 11,413
Charge-offs | 0 | 0 | (41) | (42) | (66)
Recoveries | 196 | 314 | 296 | 416 | 723
Provision (benefit) | (98) | (759) | (343) | (1,624) | (1,797)
Ending balance | 10,185 | 10,163 | 10,185 | 10,163 | 10,273
Other | Consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 2,983 | 2,771 | 3,171 | 1,958 | 1,958
Charge-offs | (170) | (133) | (538) | (438) | (558)
Recoveries | 63 | 52 | 184 | 129 | 190
Provision (benefit) | 77 | 230 | 136 | 1,271 | 1,581
Ending balance | $ 2,953 | $ 2,920 | $ 2,953 | $ 2,920 | $ 3,171

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