Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Leases
Operating cash flows from operating leases	$ 34,377	$ 35,977
Operating cash flows from finance leases	6,599	11,256
Financing cash flows from finance leases	31,276	31,181
Operating leases (1)	$ 222,908	$ 22,708