Loans Receivable and Allowance for Credit Losses (Narrative) (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) loan	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Real Estate Acquired Through Foreclosure	$ 97,000	$ 346,000
Number Of Properties Under Foreclosure Proceedings | loan	2
Annual Loan Review threshold, amount	$ 1,500,000
Financing Receivable, before Allowance for Credit Loss	1,603,877,000	1,474,424,000
Proceeds from Sale of Mortgage Loans Held-for-sale	4,973,000	845,000
Allowance for Loan and Lease Losses, Adjustments, Other		2,400,000
Allowance for Loan and Lease Losses, Period Increase (Decrease)	1,969,000	557,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	694,000	182,000
Allowance for Loan and Lease Losses, Real Estate	18,968,000	16,999,000	$ 16,442,000
Servicing Asset at Amortized Cost	59,200,000	60,000,000.0
Outstanding Balance		8,368,000
Charge offs	6,208,000
Allowance for loan losses	18,968,000	16,999,000
(Release of) Provision for credit losses	5,581,000
Total	7,622,000
Residential Rentals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Charge offs	44,000
Commercial Rentals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Charge offs	6,000
Residential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	98,000
Financing Receivable, before Allowance for Credit Loss	316,546,000	298,813,000
Proceeds from Sale of Mortgage Loans Held-for-sale	5,036,000	848,000
Gross Realized Gains on Loans	63,000	3,000
Gross Realized Losses on Loans	0	0
Charge offs	34,000
Allowance for loan losses	1,351,000	1,288,000
(Release of) Provision for credit losses	91,000
Total	432,000
Residential Real Estate Loans [Member] | Hospitality Lodging Industry [Member] | Loans Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 115,200,000
Concentration Risk, Percentage	7.20%
Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 675,156,000	651,544,000
Charge offs	154,000
Allowance for loan losses	11,871,000	13,820,000
(Release of) Provision for credit losses	(1,810,000)
Total	2,211,000
Commercial Real Estate Loans [Member] | Commercial Rentals [Member] | Loans Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 149,200,000
Concentration Risk, Percentage	9.30%
COVID [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan and Lease Losses, Adjustments, Other		2,300,000
Allowance for Loan and Lease Losses, Period Increase (Decrease)		445,000
Adoption Impact [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses		2,466,000
Adoption Impact [Member] | Residential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses		(1,545,000)
Adoption Impact [Member] | Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for loan losses		$ 5,527,000
Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 2,692,000
Real Estate [Member] | Residential Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	432,000
Real Estate [Member] | Commercial Real Estate Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	2,211,000
Other Collateral Pledged [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 4,930,000