Loans and Allowance for Credit Losses on Loans (Additional Information) (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) loan	Dec. 31, 2021 USD ($) loan	Dec. 31, 2020 USD ($) loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Related Parties, Description	At December 31, 2022 and 2021, outstanding loans to certain officers, directors and their associated companies were less than 5% of the Company's shareholders' equity.	At December 31, 2022 and 2021, outstanding loans to certain officers, directors and their associated companies were less than 5% of the Company's shareholders' equity.
Number of Portfolio Concentration Industries	0
Foregone interest	$ 145,000	$ 256,000	$ 335,000
Loans and Leases Receivable, Impaired, Commitment to Lend	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loan	0	0	0
Allowance Related to Troubled Debt Restructurings assigned during period	$ 0	$ 6,000	$ 0
Loans and Leases Receivable, Deferred Income	6,890,000	3,110,000
Financing Receivable, Allowance for Credit Losses	36,922,000	33,256,000	37,865,000
Loans and Leases Receivable, Excluded Accrued Interest from Amortized Cost	$ 10,300,000	7,800,000
SBA PPP Loans, Originations, Number of Contracts Outstanding | loan	5
Gross loans	$ 4,010,353,000	3,431,474,000
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,024,764,000	557,853,000
Non-Accrual Loans	2,991,000	4,327,000
Allowance for Loan and Lease Losses, Period Increase (Decrease)	$ 3,600,000
Financing Receivable, Allowance for Credit Loss, Increase	11.00%
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable in Process of Foreclosure	$ 481,000	888,000
Financing Receivable, Allowance for Credit Losses	9,089,000	6,133,000	3,474,000
Gross loans	1,700,266,000	1,306,447,000
Non-Accrual Loans	1,733,000	2,107,000
Loans Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Performing TDRs	2,100,000	2,400,000
Non-Performing TDRs	452,000	394,000
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Allowance for Credit Losses	504,000	79,000	393,000
Gross loans	20,591,000	19,516,000
Non-Accrual Loans	0	32,000
SBA PPP Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Deferred Income	16,000	1,200,000
Financing Receivable, Allowance for Credit Losses	1,000	19,000	$ 69,000
Gross loans	$ 632,000	$ 35,953,000
Total Loan Portfolio [Member] | Loan Concentration Risk [Member] | Non-Residential Building Operators Industry Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration Risk, Percentage	14.00%	11.00%
Commercial real estate | Loan Concentration Risk [Member] | Non-Residential Building Operators Industry Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration Risk, Percentage	34.00%	28.00%
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 429,499,000	$ 363,695,000
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	69,530,000	44,213,000
SBA PPP Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	632,000	35,953,000
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	$ 632,000	$ 319,000