Other Investments (Details) $ / shares in Units, $ in Thousands			3 Months Ended		6 Months Ended		12 Months Ended
	May 15, 2023 $ / shares shares	Feb. 27, 2020 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) hotel shares	May 14, 2023 USD ($) shares
Schedule of Equity Method Investments [Line Items]
Equity method investments			$ 108,913		$ 108,913		$ 112,617
Equity in earnings (losses) of an investee			$ 517	$ 2,193	(3,704)	$ 1,476
Capital contribution funded					$ 0	45,470
Travel Centers of America
Schedule of Equity Method Investments [Line Items]
Number of common shares owned (in shares) | shares	101,892						1,184,797	1,184,797
Percentage of total shares outstanding (in percent)			7.80%		7.80%		7.80%
Sonesta Int'l Hotels Corp
Schedule of Equity Method Investments [Line Items]
Equity in earnings (losses) of an investee			$ 582	2,258	$ (3,574)	1,606
Decrease in hotel operating expense			621	621	1,242	1,242
Capital contribution funded							$ 45,470
Number of properties owned | hotel							4
Travel Centers of America
Schedule of Equity Method Investments [Line Items]
Price of shares (in dollars per share) | $ / shares	$ 86.00
Carrying value of investment							$ 53,055	$ 101,893
Historical cost of securities							24,418	$ 24,418
(Loss) gain on equity securities			(593)	(10,059)	48,837	$ (20,319)
Sonesta agreements
Schedule of Equity Method Investments [Line Items]
Equity method investments			108,913		108,913		112,617
Amount of cost basis exceeding book value		$ 8,000
Amortization period						31 years
Amortization of basis difference			65	$ 65	130	$ 130
Unamortized balance			$ 33,721		$ 33,721		$ 34,963
Sonesta Int'l Hotels Corp
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest, ownership percentage (in percent)			34.00%		34.00%		34.00%