Management Agreements and Leases - TA Leases (Details) $ / shares in Units, $ in Thousands		1 Months Ended	12 Months Ended
	May 15, 2023 USD ($) $ / shares	Jan. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) travelCenter leaseOption property contract	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Feb. 02, 2024 travelCenter
Management Agreements and Leases [Line Items]
Rental income			$ 395,829	$ 395,667	$ 390,902
Straight line rent adjustments			$ 13,165	(7,767)	(2,621)
Number of properties | property			973
Proceeds from sale of tradenames and trademarks			$ 89,400	0	0
Reduction (increase) of rental income			$ 4,927	(320)	(9)
TravelCenters of America Inc. | BP Products North America Inc.
Management Agreements and Leases [Line Items]
Business acquisition, share price (in dollars per share) | $ / shares	$ 86.00
TravelCenters of America LLC
Management Agreements and Leases [Line Items]
Number of master leases | contract			5
Deferred percentage rental income			$ 3,507	10,578	7,085
BP Products North America Inc.
Management Agreements and Leases [Line Items]
Annual increase percentage	2.00%
Lease term	10 years
Business combination BP prepay amount	$ 188,000
Monthly rent credit amount	25,000
Guarantee obligations			3,037,475
COVID-19
Management Agreements and Leases [Line Items]
Reserves for uncollectible rents			3,436	7,697
SMTA Transaction
Management Agreements and Leases [Line Items]
Rental income			129,566	135,522	140,803
Straight line rent adjustments			5,233	5,367	10,616
Related Party
Management Agreements and Leases [Line Items]
Deferred percentage rental income			6,600	10,578	7,085
Net Lease
Management Agreements and Leases [Line Items]
Operating agreement annual rent and return			$ 372,319
Number of properties | property			752
Net Lease | Related Party | TravelCenters of America LLC
Management Agreements and Leases [Line Items]
Number of properties | travelCenter			176
Net Lease | Related Party | Real Estate Assets at Cost | Credit concentration | TravelCenters of America LLC
Management Agreements and Leases [Line Items]
Concentration risk percentage			28.80%
Travel centers | TravelCenters of America LLC
Management Agreements and Leases [Line Items]
Number of travel centers | travelCenter			176
Operating agreement annual rent and return	254,000		$ 254,000
Term of renewal options			10 years
Rental income			$ 266,263	259,093	248,291
Straight line rent adjustments			7,932	(13,143)	$ (13,237)
Quarterly payments to deferred rent receivable		$ 4,404
Accruals for unpaid rent, including deferred rents			$ 19,816	$ 30,764
Number of renewal options | leaseOption			5
Proceeds from sale of tradenames and trademarks	$ 89,400
Travel centers | TA No. 1 Lease | TravelCenters of America LLC
Management Agreements and Leases [Line Items]
Number of travel centers | travelCenter			35
Operating agreement annual rent and return			$ 52,001
Travel centers | TA No. 2 Lease | TravelCenters of America LLC
Management Agreements and Leases [Line Items]
Number of travel centers | travelCenter			36
Operating agreement annual rent and return			$ 46,111
Travel centers | TA No. 3 Lease | TravelCenters of America LLC
Management Agreements and Leases [Line Items]
Number of travel centers | travelCenter			34
Operating agreement annual rent and return			$ 44,366
Travel centers | TA No. 4 Lease | TravelCenters of America LLC
Management Agreements and Leases [Line Items]
Number of travel centers | travelCenter			36
Operating agreement annual rent and return			$ 47,023
Travel centers | TA No. 5 Lease | TravelCenters of America LLC
Management Agreements and Leases [Line Items]
Number of travel centers | travelCenter			35
Operating agreement annual rent and return			$ 64,499
Travel centers | Related Party | Subsequent event
Management Agreements and Leases [Line Items]
Number of properties | travelCenter						175