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Leases - Narrative (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Dec. 29, 2018
Lessee, Lease, Description [Line Items]      
Remaining lease term 40 years    
Option to extend lease term 5 years    
Operating lease right-of-use assets $ 308,965    
Total $ 314,130    
Accounting Standards Update 2016-02      
Lessee, Lease, Description [Line Items]      
Operating lease right-of-use assets     $ 308,300
Total     313,300
Cumulative effect   $ 23,094  
Retained earnings | Accounting Standards Update 2016-02      
Lessee, Lease, Description [Line Items]      
Cumulative effect   $ 23,094 $ 23,100