Income Taxes (Components of Net Deferred Income Tax Asset and Liability) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating losses	$ 55,657	$ 61,741
Property, equipment and intangible basis differences	9,813	5,946
Accrued liabilities	6,561	9,994
Non-cash compensation	20,128	19,198
Operating lease liabliity	232,329	276,824
Deferred revenue	2,846	2,527
Allowance for doubtful accounts	3,017	4,190
Currency translation	99,344	47,468
Other	5,808	2,657
Valuation allowance	(63,239)	(54,610)
Total deferred tax assets, net	372,264	375,935
Deferred tax liabilities:
Property, equipment and intangible basis differences	(145,328)	(158,419)
Right of use asset	(223,366)	(269,586)
Straight-line rents	(20,809)	(25,535)
Deferred foreign withholding taxes	(9,796)	(7,706)
Deferred lease costs		(34)
Other	(1,532)	(783)
Total deferred tax liabilities, net	(28,567)	(86,128)
Other Assets [Member]
Deferred tax assets:
Total deferred tax assets, net	53,722	4,342
Other Current Liabilities [Member]
Deferred tax liabilities:
Total deferred tax liabilities, net		(1,650)
Other Long-Term Liabilities [Member]
Deferred tax liabilities:
Total deferred tax liabilities, net	$ (82,290)	$ (88,820)