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Loans - Summary of Loan Balances (Detail) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | $ 6,422,421 | $ 6,450,447 |  |
Total principal balance of loans owed, net of charge-offs | 6,467,936 | 6,496,210 |  |
Unamortized net deferred loan fees | (16,423) | (15,275) |  |
Discounts to principal balance of loans owed, net of charge-offs | (29,092) | (30,488) |  |
Allowance for credit losses | (108,407) | (105,680) | $ (96,049) | $ (85,376)
Commercial real estate |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 4,353,959 | 4,359,083 |  |
Allowance for credit losses | (64,937) | (61,381) | (54,992) | (51,140)
Consumer |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 1,233,797 | 1,240,743 |  |
Allowance for credit losses | (24,896) | (24,639) | (23,679) | (23,474)
Commercial and industrial |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 553,098 | 569,921 |  |
Allowance for credit losses | (12,069) | (13,597) | (9,042) | (3,862)
Construction |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 225,996 | 211,560 |  |
Allowance for credit losses | (5,655) | (5,142) | (7,437) | (5,667)
Agriculture production |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 47,062 | 61,414 |  |
Allowance for credit losses | (833) | (906) | (883) | (1,215)
Leases |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 8,509 | 7,726 |  |
Allowance for credit losses | (17) | (15) | (16) | (18)
CRE non-owner occupied | Commercial real estate |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 2,161,059 | 2,149,725 |  |
Allowance for credit losses | (32,963) | (30,962) | (28,055) | (25,739)
CRE owner occupied | Commercial real estate |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 971,210 | 984,807 |  |
Allowance for credit losses | (14,559) | (14,014) | (12,071) | (10,691)
Multifamily | Commercial real estate |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 946,693 | 944,537 |  |
Allowance for credit losses | (13,873) | (13,132) | (11,987) | (12,395)
Farmland | Commercial real estate |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 274,997 | 280,014 |  |
Allowance for credit losses | (3,542) | (3,273) | (2,879) | (2,315)
SFR 1-4 1st DT liens | Consumer |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 803,407 | 790,349 |  |
SFR HELOCs and junior liens | Consumer |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 375,591 | 393,666 |  |
Allowance for credit losses | (10,914) | (11,413) | (10,843) | (10,510)
Other | Consumer |  |  |  |
Loans and Leases Receivable Disclosure [Line Items] |  |  |  |
Total | 54,799 | 56,728 |  |
Allowance for credit losses | $ (2,062) | $ (1,958) | $ (2,167) | $ (2,241)

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