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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, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | $ 124,455 | $ 123,517 | $ 125,366 | $ 121,522 | $ 121,522
Charge-offs | (737) | (444) | (9,706) | (3,329) | (4,051)
Recoveries | 123 | 367 | 993 | 897 | 1,413
Provision (benefit) | 730 | 320 | 7,918 | 4,670 | 6,482
Ending balance | 124,571 | 123,760 | 124,571 | 123,760 | 125,366
Off-Balance Sheet, Credit Loss, Liability [Roll Forward] |  |  |  |  |
Beginning balance | 7,205 | 6,210 | 6,000 | 5,850 | 5,850
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision for (benefit from) credit losses | (60) | (100) | 1,145 | 260 | 150
Ending balance | 7,145 | 6,110 | 7,145 | 6,110 | 6,000
Credit Loss [Roll Forward] |  |  |  |  |
Beginning balance | 131,660 | 129,727 | 131,366 | 127,372 | 127,372
Charge-offs | (737) | (444) | (9,706) | (3,329) | (4,051)
Recoveries | 123 | 367 | 993 | 897 | 1,413
Provision for (benefit from) credit losses | 670 | 220 | 9,063 | 4,930 | 6,632
Ending balance | 131,716 | 129,870 | 131,716 | 129,870 | 131,366
Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 74,484 | 73,032 | 72,849 | 68,864 | 68,864
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 1 | 1 | 2 | 189
Provision (benefit) | 533 | (1,694) | 2,167 | 2,473 | 3,796
Ending balance | 75,017 | 71,339 | 75,017 | 71,339 | 72,849
Consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 25,318 | 27,674 | 27,463 | 27,453 | 27,453
Charge-offs | (142) | (170) | (459) | (605) | (814)
Recoveries | 34 | 259 | 123 | 480 | 612
Provision (benefit) | 538 | (259) | (1,379) | 176 | 212
Ending balance | 25,748 | 27,504 | 25,748 | 27,504 | 27,463
Commercial and industrial |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 10,024 | 12,128 | 14,397 | 12,750 | 12,750
Charge-offs | (595) | (274) | (9,236) | (1,274) | (1,787)
Recoveries | 89 | 106 | 255 | 389 | 547
Provision (benefit) | (429) | 2,493 | 3,673 | 2,588 | 2,887
Ending balance | 9,089 | 14,453 | 9,089 | 14,453 | 14,397
Construction |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 10,995 | 7,466 | 7,224 | 8,856 | 8,856
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | (203) | (347) | 3,568 | (1,737) | (1,632)
Ending balance | 10,792 | 7,119 | 10,792 | 7,119 | 7,224
Agriculture production |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 3,609 | 3,180 | 3,403 | 3,589 | 3,589
Charge-offs | 0 | 0 | (11) | (1,450) | (1,450)
Recoveries | 0 | 1 | 614 | 26 | 65
Provision (benefit) | 292 | 131 | (105) | 1,147 | 1,199
Ending balance | 3,901 | 3,312 | 3,901 | 3,312 | 3,403
Leases |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 25 | 37 | 30 | 10 | 10
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | (1) | (4) | (6) | 23 | 20
Ending balance | 24 | 33 | 24 | 33 | 30
CRE non-owner occupied | Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 40,921 | 37,155 | 37,229 | 35,077 | 35,077
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 187
Provision (benefit) | 258 | (949) | 3,950 | 1,129 | 1,965
Ending balance | 41,179 | 36,206 | 41,179 | 36,206 | 37,229
CRE owner occupied | Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 11,578 | 15,873 | 15,747 | 15,081 | 15,081
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 1 | 1 | 2 | 2
Provision (benefit) | 352 | (492) | (3,818) | 299 | 664
Ending balance | 11,930 | 15,382 | 11,930 | 15,382 | 15,747
Multifamily | Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 15,097 | 15,973 | 15,913 | 14,418 | 14,418
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | 609 | (238) | (207) | 1,317 | 1,495
Ending balance | 15,706 | 15,735 | 15,706 | 15,735 | 15,913
Farmland | Commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 6,888 | 4,031 | 3,960 | 4,288 | 4,288
Charge-offs | 0 | 0 | 0 | 0 | 0
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | (686) | (15) | 2,242 | (272) | (328)
Ending balance | 6,202 | 4,016 | 6,202 | 4,016 | 3,960
SFR 1-4 1st DT liens | Consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 11,135 | 14,604 | 14,227 | 14,009 | 14,009
Charge-offs | 0 | 0 | 0 | (26) | (27)
Recoveries | 0 | 0 | 0 | 0 | 0
Provision (benefit) | (113) | (238) | (3,205) | 383 | 245
Ending balance | 11,022 | 14,366 | 11,022 | 14,366 | 14,227
SFR HELOCs and junior liens | Consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 12,021 | 10,087 | 10,411 | 10,273 | 10,273
Charge-offs | 0 | 0 | 0 | (41) | (41)
Recoveries | 4 | 196 | 20 | 296 | 395
Provision (benefit) | 337 | (98) | 1,931 | (343) | (216)
Ending balance | 12,362 | 10,185 | 12,362 | 10,185 | 10,411
Other | Consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Beginning balance | 2,162 | 2,983 | 2,825 | 3,171 | 3,171
Charge-offs | (142) | (170) | (459) | (538) | (746)
Recoveries | 30 | 63 | 103 | 184 | 217
Provision (benefit) | 314 | 77 | (105) | 136 | 183
Ending balance | $ 2,364 | $ 2,953 | $ 2,364 | $ 2,953 | $ 2,825

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