Allowance for Loan Losses - Performing and Nonperforming Loans (Detail) $ in Thousands	Dec. 31, 2022 USD ($)
Financing Receivable Recorded Investment [Line Items]
Performing	$ 496,735
Total	496,735
Residential Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Performing	432,790
Total	432,790
Real Estate Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Performing	44,172
Total	44,172
Consumer and Other [Member]
Financing Receivable Recorded Investment [Line Items]
Performing	19,773
Total	$ 19,773

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479294/326-20-55-79

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