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Loans and Allowance for Credit Losses - Outstanding Balances of Loan (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | $ 7,642,143 | $ 6,839,230
Commercial, financial, agricultural and other [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 1,211,706 | 1,173,452
Commercial, financial, agricultural and other [Member] | Time and demand loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 1,023,824 | 1,159,524
Commercial, financial, agricultural and other [Member] | Commercial credit cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 13,920 | 13,928
Commercial, financial, agricultural and other [Member] | Equipment Finance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 79,674 |
Commercial, financial, agricultural and other [Member] | Time and Demand Loans Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 94,288 |
Real Estate Construction [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 513,101 | 494,456
Real Estate Construction [Member] | Construction Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 395,439 |
Real Estate Construction [Member] | Construction Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 117,662 |
Residential Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 2,194,669 | 1,920,250
Residential Real Estate [Member] | Senior Lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 1,547,192 | 1,299,534
Residential Real Estate [Member] | Junior Lien |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 647,477 | 620,716
Commercial real estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 2,425,012 | 2,251,097
Commercial real estate [Member] | Multifamily |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 431,151 | 385,432
Commercial real estate [Member] | Nonowner Occupied Commercial Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 1,510,347 | 1,465,247
Commercial real estate [Member] | Owner Occupied Commercial Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 483,514 | 400,418
Loans To Individuals [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 1,297,655 | 999,975
Loans To Individuals [Member] | Automobile Loan |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 1,210,451 | 901,280
Loans To Individuals [Member] | Consumer Credit Cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | 10,657 | 11,151
Loans To Individuals [Member] | Other consumer loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans | $ 76,547 | $ 87,544

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524 + Details
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