Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements Nonrecurring (Details)

v3.21.1
Fair Value Measurements Nonrecurring (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 31, 2020
Mar. 31, 2020
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1, 2 and 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-lived assets   $ 60,000
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-lived assets   0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-lived assets   0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Long-lived assets   60,000
Foxwoods [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impairment charge $ 19,200 $ 45,700
Terminal capitalization rate | Foxwoods [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input   7.80%
Discount rate | Foxwoods [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Measurement input   8.50%