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Subsequent Events (Details)
1 Months Ended 3 Months Ended
Apr. 30, 2021
USD ($)
a
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Subsequent Event [Line Items]      
Purchase price   $ 4,572,000 $ 3,090,000
Line of Credit [Member] | Revolving Credit Facility [Member] | $700 Million Revolving Credit Facility [Member]      
Subsequent Event [Line Items]      
Borrowings $ 700,000,000 $ 700,000,000  
Gaylord Rockies [Member]      
Subsequent Event [Line Items]      
Ownership percentage   65.00%  
Subsequent event | Gaylord Rockies [Member]      
Subsequent Event [Line Items]      
Ownership percentage 35.00%    
Area of land | a 130    
Purchase price $ 188,000,000.0    
Payment to acquire land $ 22,000,000.0