Fair Value Measurements - Items Measured at Fair Value on a Non-Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Provisions for impairment
Less: total provisions for impairment	$ (16,808)	$ (1,650)	$ (59,801)	$ (16,379)
Properties impaired 2022
Provisions for impairment
Carrying value prior to impairment	37,500	48,100	161,400	107,000
Less: total provisions for impairment	(16,800)	(1,700)	(59,800)	(16,400)
Carrying value after impairment	$ 20,700	$ 46,400	$ 101,600	$ 90,600