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Property and Equipment - Schedule of Property and Equipment (Parenthetical) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Property Plant And Equipment [Line Items]    
Leasehold interests $ 606,338 $ 544,525
Net carrying amount of capitalized software 10,100 11,900
Leasehold Land Interests | Pursuit    
Property Plant And Equipment [Line Items]    
Leasehold interests $ 8,400 $ 7,900