Management Agreements and Leases - Sonesta (Details) $ in Thousands			1 Months Ended		3 Months Ended	12 Months Ended
	Feb. 27, 2020 USD ($) hotel	Feb. 26, 2020 USD ($)	Mar. 31, 2021 hotel	Feb. 28, 2021 hotel	Dec. 15, 2020 hotel	Dec. 31, 2020 USD ($) d travelCenter hotel unit renewalOption	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Management Agreements and Leases [Line Items]
Number of properties | travelCenter						1,109
Capital improvements from leased facilities, funded						$ 69,082	$ 150,531	$ 182,862
Equity in earnings (losses) of an investee						$ (9,910)	393	515
Hotel
Management Agreements and Leases [Line Items]
Number of properties | hotel						310
Sonesta International Hotels Corporation
Management Agreements and Leases [Line Items]
Noncontrolling interest, ownership percentage						34.00%
Sonesta Agreement
Management Agreements and Leases [Line Items]
Percentage of gross revenues from hotel operations placed into escrow	5.00%
Percent of gross revenues	5.00%
Equity method investments, carrying value						$ 36,646
Amount of cost basis exceeding book value	$ 8,000
Amortization period	31 years
Amortization of basis difference						216
Equity in earnings (losses) of an investee						(9,910)
Liability of the fair value of initial investment						42,000
Decrease in hotel operating expense						2,070
Unamortized balance						$ 39,931
Sonesta Agreement | Hotel | Subsequent event
Management Agreements and Leases [Line Items]
Number of properties | hotel				193
IHG Agreement | Sonesta | Subsequent event
Management Agreements and Leases [Line Items]
Number of properties with transferred branding and management | hotel				78
IHG Agreement | Forecast | Sonesta
Management Agreements and Leases [Line Items]
Number of properties with transferred branding and management | hotel			10
Hyatt Hotels Corporation Contract | Hotel
Management Agreements and Leases [Line Items]
Number of properties | hotel						22
Automatic renewal term						1 year
Hotel | Sonesta
Management Agreements and Leases [Line Items]
Number of properties with transferred branding and management | hotel						9
Hotel | Sonesta Agreement
Management Agreements and Leases [Line Items]
Annual minimum returns and rents						$ 349,456
Number of properties | hotel						168
Percentage increase in minimum returns						8.00%
Percent payment of hotel cash flows						80.00%
Hotel net income (loss)						$ (65,277)
Realized returns and rents							67,592	78,076
Percentage of reservation fee						0.015%
Percentage of system fee for centralized services						0.015%
Percentage of incentive fee						0.20%
Percentage of procurement and construction supervision fee						0.03%
Related party transaction, management, marketing and reservation system fees						$ 17,734	36,169	34,821
Procurement and construction supervisory fees						1,571	3,320	2,374
Capital improvements from leased facilities, funded						$ 62,963	114,082	82,329
Number of renewal options available | renewalOption						2
Renewal period						15 years
Days' notice to terminate agreement without cause | d						60
Minimum return or termination						6.00%
Minimum agreement period before right to terminate agreement without cause						30 days
Maximum agreement period before right to terminate agreement without cause						60 days
Hotel | IHG Agreement
Management Agreements and Leases [Line Items]
Annual minimum returns and rents						$ 216,551
Realized returns and rents						$ 107,888	205,941	189,981
Percent of gross revenues						5.00%
Hotel | IHG Agreement | Sonesta
Management Agreements and Leases [Line Items]
Number of properties with transferred branding and management | hotel					115
Hotel | Hyatt Hotels Corporation Contract
Management Agreements and Leases [Line Items]
Annual minimum returns and rents						$ 22,037
Number of properties | hotel						22
Realized returns and rents						$ 22,037	22,037	22,037
Percent of gross revenues						5.00%
Hotel | Full service hotels | Sonesta
Management Agreements and Leases [Line Items]
Number of properties with transferred branding and management | hotel						102
Hotel | Full service hotels | Sonesta Agreement
Management Agreements and Leases [Line Items]
Annual minimum returns and rents	$ 69,013	$ 99,013
Property management fees, percentage of gross revenue						3.00%
Hotel | Limited services hotels | Sonesta Agreement
Management Agreements and Leases [Line Items]
Property management fees, percentage of gross revenue						0.05%
Hotel | Sonesta International Hotels Corporation
Management Agreements and Leases [Line Items]
Number of properties | hotel						168
Due to related party, reimbursement of capital expenditures and other						$ 26,096	$ 15,537	$ 5,703
Hotel | Sonesta International Hotels Corporation | Full service hotels
Management Agreements and Leases [Line Items]
Number of real estate properties leased or managed | hotel	14					38
Hotel | Sonesta International Hotels Corporation | Limited services hotels
Management Agreements and Leases [Line Items]
Number of real estate properties leased or managed | hotel	39					121
Hotel | Sonesta International Hotels Corporation | Select service hotels
Management Agreements and Leases [Line Items]
Number of real estate properties leased or managed | hotel						9
Vacation units | Wyndham destinations agreement
Management Agreements and Leases [Line Items]
Number of units leased | unit						48