Management Agreements and Leases - Radisson Agreement (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) travelCenter hotel	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Management Agreements and Leases [Line Items]
Number of properties | travelCenter	1,109
Hotel
Management Agreements and Leases [Line Items]
Number of properties | hotel	310
Radisson Agreement | Hotel
Management Agreements and Leases [Line Items]
Number of properties | hotel	9
Radisson Agreement | Hotel
Management Agreements and Leases [Line Items]
Annual minimum returns and rents	$ 20,601
Realized returns and rents	20,456	$ 20,056	$ 16,183
Guarantee provided to the entity, maximum	47,523
Increase in guarantee	27,978
Guarantee provided to the entity, remaining amount	$ 13,238
Percent payment of hotel cash flows	50.00%
Percent of gross revenues	5.00%