Leased Assets and Liabilities (Weighted-Average) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Leases signed but not yet commenced	$ 31,000
Weighted-average remaining lease term
Operating leases	7 years 2 months 12 days	7 years 8 months 12 days
Finance leases	5 years 7 months 6 days	3 years 10 months 24 days
Weighted-average discount rate
Operating leases	7.10%	6.10%
Finance leases	7.10%	6.80%