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Loans and ACL - Summary of Modified Loans (Detail) $ in Thousands | 3 Months Ended
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Mar. 31, 2023 USD ($) Loan
Loans and Leases Receivable Disclosure [Line Items] |
Modified Term Extension Amortized Cost of Modified Loans to Gross Loans by Category | 1.51%
Total modified loan units | Loan | 3
Total modified loan, amortized cost | $ 37,152
Loans modified amortized cost gross amount | $ 37,152
Commercial and Industrial [Member] |
Loans and Leases Receivable Disclosure [Line Items] |
Modified term extension loan units | Loan | 1
Modified term extension amortization cost | $ 33,771
Modified Term Extension Amortized Cost of Modified Loans to Gross Loans by Category | 5.96%
ModifiedTermExtension Financial Effect | 13-month extension through January 2024
Loans modified amortized cost gross amount | $ 33,771
Commercial and Industrial [Member] | Real Estate [Member] |
Loans and Leases Receivable Disclosure [Line Items] |
Modified Term Extension Amortized Cost of Modified Loans to Gross Loans by Category | 0.39%
ModifiedTermExtension Financial Effect | Interest-only payments for six months
Mortgage, Commercial [Member] | Real Estate [Member] |
Loans and Leases Receivable Disclosure [Line Items] |
Modified interest only loan units | Loan | 2
Modifiedinterest only amortization cost | $ 3,381
Loans modified amortized cost gross amount | 3,381
Current Loans [Member] |
Loans and Leases Receivable Disclosure [Line Items] |
Total modified loan, amortized cost | 3,381
Current Loans [Member] | Commercial and Industrial [Member] |
Loans and Leases Receivable Disclosure [Line Items] |
Total modified loan, amortized cost | 0
Current Loans [Member] | Mortgage, Commercial [Member] | Real Estate [Member] |
Loans and Leases Receivable Disclosure [Line Items] |
Total modified loan, amortized cost | 3,381
Nonaccrual [Member] |
Loans and Leases Receivable Disclosure [Line Items] |
Loan modified amortized cost, nonaccrual | 33,771
Nonaccrual [Member] | Commercial and Industrial [Member] |
Loans and Leases Receivable Disclosure [Line Items] |
Loan modified amortized cost, nonaccrual | 33,771
Nonaccrual [Member] | Mortgage, Commercial [Member] |
Loans and Leases Receivable Disclosure [Line Items] |
Loan modified amortized cost, nonaccrual | $ 0

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