Management Agreements and Leases - Wyndham (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($) hotel	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) hotel unit	Sep. 30, 2017 USD ($)
Management Agreements and Leases [Line Items]
Adjustments necessary to record rent on straight line basis		$ 3,136	$ 3,087	$ 9,359	$ 9,208
Capital improvements from leased facilities, funded				$ 111,248	89,955
Wyndham agreement
Management Agreements and Leases [Line Items]
Percentage of contractual amounts due upon cash flows unavailability, minimum				85.00%
Vacation units | Wyndham Destinations Agreement
Management Agreements and Leases [Line Items]
Number of properties owned | hotel		1		1
Operating agreement annual rent and return				$ 1,449
Realized returns and rents		$ 454	454	$ 1,361	1,361
Number of units leased | unit				48
Adjustments necessary to record rent on straight line basis		$ 91	102	$ 273	306
Hotel
Management Agreements and Leases [Line Items]
Number of properties owned | hotel		325		325
Hotel | Wyndham agreement
Management Agreements and Leases [Line Items]
Number of properties owned | hotel		22		22
Operating agreement annual rent and return				$ 27,677
Realized returns and rents		$ 5,869	$ 6,847	17,588	$ 20,489
Guarantee provided to the entity, maximum		35,656		35,656
Annual guarantee provided to the entity, maximum		$ 17,828		$ 17,828
FF&E reserve funding requirements as a percentage of total sales				5.00%
Hotel managers’ deposits in restricted cash				$ 0
Capital improvements from leased facilities, funded				$ 1,449
Percentage increase in minimum returns				8.00%
Forecast | Hotel | Wyndham agreement
Management Agreements and Leases [Line Items]
Capital improvements from leased facilities, funded	$ 6,600