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Significant Accounting Policies - Financing Obligations (Details)
Oct. 15, 2018
Nov. 01, 2013
Penn Master Lease    
Capital Leased Assets [Line Items]    
Lease term   35 years
Discount rate   9.70%
Pinnacle Master Lease    
Capital Leased Assets [Line Items]    
Discount rate 7.30%  
Remaining lease term 32 years 6 months  
Effective yield 9.60%