Other Investments (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Feb. 27, 2020	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	May 15, 2023
Schedule of Equity Method Investments [Line Items]
Equity method investment		$ 111,014		$ 113,304
Equity in losses of an investee		5,338	$ 4,221
Capital contribution funded		3,392	0
TravelCenters of America Inc. | BP Products North America Inc.
Schedule of Equity Method Investments [Line Items]
Business acquisition, share price (in dollars per share)					$ 86.00
Travel Centers of America
Schedule of Equity Method Investments [Line Items]
Number of common shares owned (in shares)					1,184,797
Percentage of total shares outstanding (in percent)					7.80%
Sonesta Int'l Hotels Corp
Schedule of Equity Method Investments [Line Items]
Equity in losses of an investee		5,338	4,221
Decrease in hotel operating expense		621	621
Capital contribution funded		3,392
Travel Centers of America
Schedule of Equity Method Investments [Line Items]
Historical cost of securities				24,418	$ 24,418
Carrying value of investment					$ 101,893
Gain on equity securities			49,430
Sonesta agreements
Schedule of Equity Method Investments [Line Items]
Equity method investment		111,014		113,304
Amount of cost basis exceeding book value	$ 8,000
Amortization period	31 years
Amortization of basis difference		65	$ 65
Accounts payable and other liabilities		42,000
Unamortized balance		$ 31,858		$ 32,479
Sonesta Int'l Hotels Corp
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest, ownership percentage (in percent)		34.00%		34.00%