Organization, operations and basis of presentation - Narrative (Details) - resort		4 Months Ended	9 Months Ended
	May 22, 2020	Nov. 04, 2020	Sep. 30, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of resorts in portfolio			21
COVID-19 Pandemic | Sale of Assets | Two Resorts Operated Under Jewel Brand
Unusual or Infrequent Item, or Both [Line Items]
Number of resorts sold for cash consideration	2
COVID-19 Pandemic | Subsequent Event
Unusual or Infrequent Item, or Both [Line Items]
Number of resorts reopened		18