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Significant Accounting Policies - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2022 USD ($) lease_renewal_option | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Financing Receivable, Impaired [Line Items] |  |  |
Date of discontinued recognition of interest on mortgage and commercial loans | 90 days |  |
Consumer and other retail loan due date | 120 days |  |
Interest receivable | $ 49,850,000 | $ 41,692,000 |
Allowance for credit losses on interest deferred | $ 1,248,000 | $ 1,273,000 |
Minimum duration for past due residential loans to be considered as nonperforming | 90 days | 90 days |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | Property, Plant and Equipment, Net | Property, Plant and Equipment, Net |
Operating Lease, Liability, Statement of Financial Position [Extensible List] | Other liabilities | Other liabilities |
Number of renewal options (1 or more) | lease_renewal_option | 1 |  |
Impairment of company's goodwill | $ 0 | $ 0 | $ 0
Lock in period for interest rates | 45 days |  |
Premises |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Estimated life (in years) | 40 years |  |
Minimum |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Renewal term | 1 year |  |
Minimum | Furniture and equipment |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Estimated life (in years) | 3 years |  |
Minimum | Computer equipment |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Estimated life (in years) | 3 years |  |
Minimum | Lease financing |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Maturity term | 2 years |  |
Minimum | Residential | Real estate – construction: |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Maturity term | 6 months |  |
Minimum | Commercial | Real estate – construction: |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Maturity term | 24 months |  |
Maximum |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Renewal term | 20 years |  |
Maximum | Furniture and equipment |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Estimated life (in years) | 7 years |  |
Maximum | Computer equipment |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Estimated life (in years) | 5 years |  |
Maximum | Lease financing |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Maturity term | 5 years |  |
Maximum | Residential | Real estate – construction: |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Maturity term | 12 months |  |
Maximum | Commercial | Real estate – construction: |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Maturity term | 36 months |  |

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