Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
 1 Months Ended 3 Months Ended 12 Months Ended
Oct. 16, 2020
USD ($)
Mar. 07, 2018
property
Mar. 31, 2020
property
Jun. 30, 2020
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2020
USD ($)
security
Dec. 31, 2019
USD ($)
security
Dec. 31, 2018
USD ($)
security
Jan. 01, 2019
USD ($)
Dec. 31, 2017
USD ($)
New Accounting Pronouncements or Change in Accounting Principle                    
Proceeds from sale of property and equipment         $ 75,700,000 $ 35,617,000 $ 62,899,000 $ 78,888,000    
Consolidation percentage (as percent)           50.00%        
Net unrealized gain         $ 134,667,000 $ 10,037,000 65,575,000 134,667,000   $ 171,051,000
Refundable term for initiation fees (in years)           30 years        
Other than temporary impairment       $ 24,700,000   $ 24,700,000        
Expected life of active golf membership (in years)           7 years        
Ownership in equity investment (as percent)           22.00%        
Other investments           $ 0 24,020,000      
Allowances for doubtful accounts           900,000 1,100,000      
Increase (decrease) in allowance for doubtful accounts           200,000 100,000      
Operating lease right-of-use assets           192,828,000 215,308,000   $ 225,600,000  
Operating lease liability           187,732,000     $ 205,900,000  
Net realized (gain) loss on securities                    
New Accounting Pronouncements or Change in Accounting Principle                    
Net unrealized gain           1,500,000 1,700,000      
Disposed of by sale | Golf Properties                    
New Accounting Pronouncements or Change in Accounting Principle                    
Sale price on sale of property $ 34,500,000                  
Proceeds from sale of property and equipment $ 33,600,000         $ 33,600,000 $ 74,300,000 $ 76,700,000    
Number of real estate properties | security           1 11 13    
Carrying value of property           $ 17,000,000.0 $ 54,700,000 $ 66,000,000.0    
Gain on disposition of property           $ 16,600,000 $ 19,400,000 $ 10,700,000    
Held-for-sale | Golf Properties                    
New Accounting Pronouncements or Change in Accounting Principle                    
Number of properties sold (property) | property   26                
Entertainment Golf                    
New Accounting Pronouncements or Change in Accounting Principle                    
Number of real estate properties opened | property     3