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Allowance for Credit Losses - Analysis of Past Due and Nonaccrual Loans (Detail) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | $ 6,708,666 | $ 6,450,447
Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 4,367,445 | 4,359,083
Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,288,810 | 1,240,743
Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 599,757 | 569,921
Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 320,963 | 211,560
Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 123,472 | 61,414
Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 8,219 | 7,726
CRE non-owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 2,171,422 | 2,149,725
CRE owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 958,054 | 984,807
Multifamily | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 959,361 | 944,537
Farmland | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 278,608 | 280,014
SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 870,209 | 790,349
SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 352,798 | 393,666
Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 65,803 | 56,728
Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 6,708,666 | 6,450,447
Financial Asset Originated | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 4,367,445 | 4,359,083
Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,288,810 | 1,240,743
Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 599,757 | 569,921
Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 320,963 | 211,560
Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 123,472 | 61,414
Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 8,219 | 7,726
Financial Asset Originated | CRE non-owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 2,171,422 | 2,149,725
Financial Asset Originated | CRE owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 958,054 | 984,807
Financial Asset Originated | Multifamily | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 959,361 | 944,537
Financial Asset Originated | Farmland | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 278,608 | 280,014
Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 870,209 | 790,349
Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 352,798 | 393,666
Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 65,803 | 56,728
Total Past Due Loans | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 8,072 | 4,947
Total Past Due Loans | Financial Asset Originated | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,364 | 332
Total Past Due Loans | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 5,000 | 1,463
Total Past Due Loans | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,675 | 2,773
Total Past Due Loans | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 379
Total Past Due Loans | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 33 | 0
Total Past Due Loans | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
Total Past Due Loans | Financial Asset Originated | CRE non-owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 615 | 0
Total Past Due Loans | Financial Asset Originated | CRE owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 485 | 173
Total Past Due Loans | Financial Asset Originated | Multifamily | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 159
Total Past Due Loans | Financial Asset Originated | Farmland | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 264 | 0
Total Past Due Loans | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,530 | 303
Total Past Due Loans | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 3,255 | 1,045
Total Past Due Loans | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 215 | 115
30-59 days | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 2,681 | 2,681
30-59 days | Financial Asset Originated | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 541 | 159
30-59 days | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 2,087 | 222
30-59 days | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 53 | 2,300
30-59 days | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
30-59 days | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
30-59 days | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
30-59 days | Financial Asset Originated | CRE non-owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 403 | 0
30-59 days | Financial Asset Originated | CRE owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 138 | 0
30-59 days | Financial Asset Originated | Multifamily | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 159
30-59 days | Financial Asset Originated | Farmland | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
30-59 days | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 398 | 24
30-59 days | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,570 | 172
30-59 days | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 119 | 26
60-89 days | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 2,197 | 488
60-89 days | Financial Asset Originated | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 117 | 98
60-89 days | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,972 | 200
60-89 days | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 108 | 190
60-89 days | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
60-89 days | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
60-89 days | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
60-89 days | Financial Asset Originated | CRE non-owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
60-89 days | Financial Asset Originated | CRE owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 117 | 98
60-89 days | Financial Asset Originated | Multifamily | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
60-89 days | Financial Asset Originated | Farmland | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
60-89 days | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 560 | 0
60-89 days | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,391 | 166
60-89 days | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 21 | 34
> 90 days | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 3,194 | 1,778
> 90 days | Financial Asset Originated | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 706 | 75
> 90 days | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 941 | 1,041
> 90 days | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,514 | 283
> 90 days | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 379
> 90 days | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 33 | 0
> 90 days | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
> 90 days | Financial Asset Originated | CRE non-owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 212 | 0
> 90 days | Financial Asset Originated | CRE owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 230 | 75
> 90 days | Financial Asset Originated | Multifamily | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 0 | 0
> 90 days | Financial Asset Originated | Farmland | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 264 | 0
> 90 days | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 572 | 279
> 90 days | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 294 | 707
> 90 days | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 75 | 55
Current | Financial Asset Originated |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 6,700,594 | 6,445,500
Current | Financial Asset Originated | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 4,366,081 | 4,358,751
Current | Financial Asset Originated | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 1,283,810 | 1,239,280
Current | Financial Asset Originated | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 598,082 | 567,148
Current | Financial Asset Originated | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 320,963 | 211,181
Current | Financial Asset Originated | Agriculture production |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 123,439 | 61,414
Current | Financial Asset Originated | Leases |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 8,219 | 7,726
Current | Financial Asset Originated | CRE non-owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 2,170,807 | 2,149,725
Current | Financial Asset Originated | CRE owner occupied | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 957,569 | 984,634
Current | Financial Asset Originated | Multifamily | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 959,361 | 944,378
Current | Financial Asset Originated | Farmland | Commercial Real Estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 278,344 | 280,014
Current | Financial Asset Originated | SFR 1-4 1st DT liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 868,679 | 790,046
Current | Financial Asset Originated | SFR HELOCs and junior liens | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | 349,543 | 392,621
Current | Financial Asset Originated | Other | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable | $ 65,588 | $ 56,613

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