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Leases Leases (Supplemental Cash Flow and Balance Sheet Information) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:      
Operating cash flows from operating leases $ 1,355,000 $ 1,434,000 $ 1,394,000
Operating cash flows from finance leases 154,000 151,000 68,000
Financing cash flows from finance leases 152,000 142,000 106,000
Right-of-use assets obtained in exchange for new lease obligations:      
Operating leases 106,000 2,002,000 14,030,000
Finance leases $ 0 $ 3,668,000 $ 1,612,000
Weighted average remaining lease term (years)      
Operating leases 14 years 9 months 18 days 15 years 4 months 24 days  
Finance leases 26 years 4 months 24 days 27 years  
Weighted average discount rate:      
Operating Leases 3.40% 3.40%  
Finance leases 3.44% 3.44%