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v3.23.1

Loans and ACL - Additional Information (Detail) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 USD ($) Loan | Dec. 31, 2022 USD ($) Loan
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans | $ 2,457,325 | $ 2,412,699
Interest Income on NonAccrual Loans | $ 378 |
Number of doubtful loans | Loan | 0 | 0
Loans pledged | $ 2,457,325 |
Nonperforming trouble debt restructuring |  | $ 1,100
Amortized Cost of PCD Loans | 58,200 |
Non-Credit Discount on PCD Loans | 5,300 |
Mortgage loans with amortized cost | 645 | 0
Amortized cost of ACL related to PCD loans | 639 |
Risk Grade 7 |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans |  | 58,404
Loans pledged | 79,171 |
Grade 5 Pass/Watch [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans |  | 143,207
Paycheck Protection Plan Liquidity Facility Advances [Member] | Asset Pledged as Collateral without Right [Member] | Federal Home Loan Bank Advances [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans pledged | $ 0 | 51
Minimum [Member] | Grade 5 Pass/Watch [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loan To Value Ratio | 90.00% |
Commercial and Residential Mortgages [Member] | Asset Pledged as Collateral without Right [Member] | Federal Home Loan Bank Advances [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Loans pledged | $ 531,800 | 436,000
Paycheck Protection Program [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Gross loans | 7,988 | $ 11,967
Loans pledged | $ 7,988 |

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