Significant Accounting Policies - Additional Information (Details)	12 Months Ended
	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