Loans and ACL - Summary of Performance of Loans Modified (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	$ 19,855
Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	19,017
Residential [Member] | Real Estate Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	683
Residential Construction [Member] | Real Estate Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	155
Current Loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	1,961
Current Loans [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	1,680
Current Loans [Member] | Residential [Member] | Real Estate Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	126
Current Loans [Member] | Residential Construction [Member] | Real Estate Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	155
30-59 Days Past Due [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	0
30-59 Days Past Due [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	0
30-59 Days Past Due [Member] | Residential [Member] | Real Estate Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	0
30-59 Days Past Due [Member] | Residential Construction [Member] | Real Estate Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	0
Greater than 90 Days Past Due & Accruing [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	0
Greater than 90 Days Past Due & Accruing [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	0
Greater than 90 Days Past Due & Accruing [Member] | Residential [Member] | Real Estate Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	0
Greater than 90 Days Past Due & Accruing [Member] | Residential Construction [Member] | Real Estate Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	0
Non Accrual [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	17,894
Non Accrual [Member] | Commercial and Industrial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	17,337
Non Accrual [Member] | Residential [Member] | Real Estate Loan [Member]
Loans and Leases Receivable Disclosure [Line Items]
Financing Receivable, Modified in Period, Amount	$ 557