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Leases (Schedule of Additional Information Related to Leases) (Details)
Dec. 31, 2020
Dec. 31, 2019
Lessee Disclosure [Abstract]    
Operating leases, weighted average remaining lease term 6 years 6 years
Finance leases, weighted average remaining lease term 9 years 10 years
Operating leases, weighted average discount rate 4.50% 4.90%
Finance leases, weighted average discount rate 8.00% 6.70%