Lease Disclosures Payment for Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Principal payments on finance lease obligations	$ 3,000	$ 3,400	$ 9,034	$ 10,329
Interest payments on finance lease obligations	1,600	1,900	5,000	5,900
Payments on operating leases	23,500	22,900	70,000	68,700
Variable lease payments	$ 100	$ 600	$ 700	$ 2,100