Investments in Partnerships - Summarized Statement of Operations Information in Significant Unconsolidated Subsidiary (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Schedule Of Equity Method Investments [Line Items]
Revenue	$ 73,127		$ 74,118		$ 142,562	$ 139,522
Property operating expenses	31,802		30,765		65,375	63,924
Interest expense	32,601		31,978		63,992	62,709
Net (loss) income	(11,015)	$ (32,973)	(25,380)	$ (43,980)	(43,988)	(69,360)
PREIT's share of equity in (loss) income of partnership	(10,790)		(24,597)		(43,259)	(67,343)
Fashion District Philadelphia [Member]
Schedule Of Equity Method Investments [Line Items]
Revenue	6,586		12,815		13,634	17,741
Property operating expenses	(3,998)		(2,706)		(9,212)	(9,060)
Interest expense	7,524		6,010		14,609	11,695
Net (loss) income	(8,006)		544		(16,266)	(9,789)
PREIT's share of equity in (loss) income of partnership	$ (4,003)		$ 272		$ (8,133)	$ (4,895)