Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Estimated useful lives for amortization) (Details)

v3.8.0.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Estimated useful lives for amortization) (Details)
 3 Months Ended
Mar. 31, 2018
Trade name  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful lives 30 years
Leasehold Intangibles | Lower Range  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful lives 1 year
Leasehold Intangibles | Upper Range  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful lives 26 years
Management contracts | Lower Range  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful lives 1 year
Management contracts | Upper Range  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful lives 26 years
Internally-developed software  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful lives 5 years
Membership base  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful lives 7 years