Transactions with Unconsolidated Joint Ventures (Details)	12 Months Ended			15 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2018 USD ($) Promissory_note	Oct. 31, 2016 USD ($)	Aug. 31, 2015 USD ($)
Related Party Transaction [Line Items]
Receivables, net	$ 138,018,000	$ 125,870,000		$ 138,018,000
Member of Unconsolidated Joint Venture
Related Party Transaction [Line Items]
Payments to fund long-term loans to related parties				$ 22,200,000
Number of promissory notes entered into | Promissory_note				3
Management fee expense	1,700,000	1,400,000	$ 800,000
Member of Unconsolidated Joint Venture
Related Party Transaction [Line Items]
Royalty and marketing and reservation system fees	25,400,000	22,400,000	17,300,000
Receivables, net	1,100,000	1,300,000		$ 1,100,000
Commissions paid to travel agent	200,000	$ 200,000	$ 200,000
Member of Unconsolidated Joint Venture | Loans Payable
Related Party Transaction [Line Items]
Debt instrument, face amount						$ 24,374,732
Related party transaction, additional loan amount					$ 1,000,000
Payments to fund long-term loans to related parties	25,400,000
Promissory note outstanding	$ 21,900,000			$ 21,900,000