Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Useful Lives for Amortization (Details)

v3.20.4
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Useful Lives for Amortization (Details)
 12 Months Ended
Dec. 31, 2020
Trade name  
Finite-Lived Intangible Assets  
Amortization period (in years) 30 years
Management contracts | Lower Range  
Finite-Lived Intangible Assets  
Amortization period (in years) 2 years
Management contracts | Upper Range  
Finite-Lived Intangible Assets  
Amortization period (in years) 26 years
Internally-developed software | Lower Range  
Finite-Lived Intangible Assets  
Amortization period (in years) 3 years
Internally-developed software | Upper Range  
Finite-Lived Intangible Assets  
Amortization period (in years) 5 years
Membership base  
Finite-Lived Intangible Assets  
Amortization period (in years) 7 years