Leases Leases (Supplemental Cash Flow and Balance Sheet Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 1,391,000	$ 1,355,000	$ 1,434,000
Operating cash flows from finance leases	149,000	154,000	151,000
Financing cash flows from finance leases	160,000	152,000	142,000
Right-of-use assets obtained in exchange for new lease obligations:
Operating leases	764,000	106,000	2,002,000
Finance leases	$ 0	$ 0	$ 3,668,000
Weighted average remaining lease term (years)
Operating leases	13 years 10 months 24 days	14 years 9 months 18 days
Finance leases	25 years 9 months 18 days	26 years 4 months 24 days
Weighted average discount rate:
Operating Leases	3.44%	3.40%
Finance leases	3.44%	3.44%