Loans and Allowance for Credit Losses - Summary of Investment of PCI Loans (Detail) - Real Estate [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Greater than 90 Days Past Due & Accruing [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	$ 58,394
Greater than 90 Days Past Due & Accruing [Member] | Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	1,481
Greater than 90 Days Past Due & Accruing [Member] | Construction, Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	7
Greater than 90 Days Past Due & Accruing [Member] | Mortgage, Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	51,223
Greater than 90 Days Past Due & Accruing [Member] | Mortgage, Residential [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	5,324
Greater than 90 Days Past Due & Accruing [Member] | Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	359
Current [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	354
Current [Member] | Mortgage, Residential [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	354
Total Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	58,748
Total Loan [Member] | Commercial and Industrial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	1,481
Total Loan [Member] | Construction, Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	7
Total Loan [Member] | Mortgage, Commercial [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	51,223
Total Loan [Member] | Mortgage, Residential [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	5,678
Total Loan [Member] | Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Purchase loans	$ 359