Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)

v3.10.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
derivative_instrument
Sep. 30, 2017
USD ($)
Dec. 31, 2017
USD ($)
Accounting Policies [Abstract]        
Refundable term for initiation fees   30 years    
Derivative [Line Items]        
Return of margin deposits under repurchase agreements and derivatives   $ 0 $ 87,785  
Period to recognize membership dues   P7Y    
Ownership in equity investment (as percent)   22.00%    
Other investments   $ 22,265   $ 21,135
Interest rate cap        
Derivative [Line Items]        
Interest rate derivative instruments not designated as hedging instruments at fair value, net   $ 600    
Interest rate cap | Non-hedge derivatives        
Derivative [Line Items]        
Number of interest rate derivatives held (in derivatives) | derivative_instrument   1    
Lower Range        
Derivative [Line Items]        
Operating lease term   10 years    
Upper Range        
Derivative [Line Items]        
Operating lease term   20 years    
Traditional Golf        
Derivative [Line Items]        
Period to recognize membership dues   seven years    
Entertainment Golf        
Derivative [Line Items]        
Period to recognize membership dues   twelve months or less    
Accounting Standards Update 2015-18        
Derivative [Line Items]        
Return of margin deposits under repurchase agreements and derivatives     1,900  
Reclassification Adjustment | Operating Expense        
Derivative [Line Items]        
Corporate overhead $ (3,900)   (11,600)  
Reclassification Adjustment | General and Administrative Expense        
Derivative [Line Items]        
Corporate overhead $ 3,900   $ 11,600