Leases (Weighted Average Lease Term and Discount Rate) (Details)	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease, weighted average remaining lease term	3 years 9 months 18 days	4 years 4 months 24 days
Financing lease, weighted average remaining lease term	5 years 1 month 6 days	0 years
Operating leases, weighted-average discount rate	2.82%	3.02%
Finance leases, weighted-average discount rate	0.82%	0.00%