Goodwill and Intangible Assets, net - Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 314,241		$ 355,138
Accumulated Amortization	(42,354)		(21,608)
Net Carrying Amount	271,887		333,530
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	14,531		14,431
Impairment	(7,641)
Net Carrying Amount	6,890
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	47		44
Accumulated Amortization	(9)		(3)
Net Carrying Amount	38		41
Remington | Trademarks
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	10,400		10,300
Impairment	(5,500)
Net Carrying Amount	4,900
Remington | Management contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	107,600		148,500
Accumulated Amortization	(12,746)		(2,436)
Net Carrying Amount	94,854		146,064
Premier | Management contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	194,000		194,000
Accumulated Amortization	(26,279)		(16,830)
Net Carrying Amount	167,721		177,170
JSAV | Trademarks
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount		$ 3,641	3,641
Impairment	(2,141)
Net Carrying Amount	1,500
JSAV | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	9,319		9,319
Accumulated Amortization	(3,012)		(2,173)
Net Carrying Amount	6,307		7,146
RED | Trademarks
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount	490		490
RED | Boat slip rights
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,100		3,100
Accumulated Amortization	(186)		(70)
Net Carrying Amount	2,914		3,030
Pure Wellness | Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	175		175
Accumulated Amortization	(122)		(96)
Net Carrying Amount	$ 53		$ 79