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Loans and Allowance for Loan Losses - Summary of Impaired Financing Receivables (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable Impaired [Line Items]
Impaired financing receivable, with no specific allowance recorded, recorded investment	$ 73,643	$ 9,733
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance	73,660	10,388
Impaired financing receivable, related allowance	11,606	879
Commercial and Industrial [Member]
Financing Receivable Impaired [Line Items]
Impaired financing receivable, with no specific allowance recorded, recorded investment	1,268
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance	1,289
Impaired financing receivable, related allowance	11,605	836
Impaired financing receivable, with an allowance recorded, recorded investment	66,386	4,612
Impaired financing receivable, with an allowance recorded, unpaid principal balance	66,386	4,612
Real Estate [Member] | Mortgage, Residential [Member]
Financing Receivable Impaired [Line Items]
Impaired financing receivable, with no specific allowance recorded, recorded investment	834
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance	834
Impaired financing receivable, related allowance		42
Impaired financing receivable, with an allowance recorded, recorded investment	0	1,400
Impaired financing receivable, with an allowance recorded, unpaid principal balance	0	1,400
Real Estate [Member] | Commercial Construction [Member]
Financing Receivable Impaired [Line Items]
Impaired financing receivable, with no specific allowance recorded, recorded investment	521	527
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance	521	527
Real Estate [Member] | Mortgage, Commercial [Member]
Financing Receivable Impaired [Line Items]
Impaired financing receivable, with no specific allowance recorded, recorded investment	4,508
Impaired financing receivable, with no specific allowance recorded, unpaid principal balance	4,504
Impaired financing receivable, related allowance	1	1
Impaired financing receivable, with an allowance recorded, recorded investment	126	3,194
Impaired financing receivable, with an allowance recorded, unpaid principal balance	$ 126	$ 3,849

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Amount of allowance for credit losses related to recorded investment.

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-Name Accounting Standards Codification
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Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

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