Supplemental Cash Flow Information (Tables) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020
Supplemental Cash Flow Information [Abstract]
Cash payments related to operating lease liabilities	[1],[2]	$ 82,447	$ 80,853
Interest Paid		19,246	19,246
New ROU assets obtained in exchange for operating lease liabilities	[2]	17,891	46,234
Increase (Decrease) in accounts payable for purchases of property and equipment		$ 828	$ (2,758)

[1] Excludes the Company's contingent payments pursuant to operating leases, which are recorded as expense in the period such contingencies are resolved.

[2] Inclusive of leases with related parties. See note 4.