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Fair Value Measurements - Additional Information (Details)
1 Months Ended
Sep. 30, 2013
Dec. 31, 2018
payment
Dec. 31, 2017
payment
Jan. 19, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Interest rate   5.625%    
Plainridge Park Casino        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Period of actual earnings used to calculate contingent consideration 10 years      
Number of remaining annual payments   7 8  
Senior notes | 5.625% Notes due 2027        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Interest rate   5.625%   5.625%
JIVDC | Discounted cash flow | Discount rate        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Loan receivable, measurement input     0.14