Leases (Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease right-of-use asset	$ 172,167	$ 183,048
Operating lease liabilities	19,204	15,862
Operating lease liabilities	160,980	174,327
Operating Lease, Liability	180,184	190,189
Finance Lease, Right-of-Use Asset	881	1,488
Finance Lease, Liability, Current	475	669
Finance Lease, Liability, Noncurrent	320	811
Finance Lease, Liability	$ 795	$ 1,480
Operating Lease, Weighted Average Remaining Lease Term	18 years 11 months 19 days	19 years 2 months 26 days
Finance Lease, Weighted Average Remaining Lease Term	2 years	2 years 9 months 3 days
Operating Lease, Weighted Average Discount Rate, Percent	3.59%	3.59%
Finance Lease, Weighted Average Discount Rate, Percent	2.98%	2.98%