Investments in Partnerships - Summary of Equity Method Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Investments in real estate, at cost:
Operating properties	$ 745,102	$ 741,007
Construction in progress	13,511	5,346
Total investments in real estate	758,613	746,353
Accumulated depreciation	(251,317)	(237,791)
Net investments in real estate	507,296	508,562
Cash and cash equivalents	54,191	28,186
Deferred costs and other assets, net	140,613	142,929
Total assets	702,100	679,677
LIABILITIES AND PARTNERS’ INVESTMENT:
Mortgage loans payable, net	402,455	400,141
FDP Term Loan, net	73,320	104,427
Partnership Loans	251,939	214,008
Other liabilities	193,164	155,873
Total liabilities	920,878	874,449
Net investment	(218,778)	(194,772)
Partners’ share	(114,519)	(102,495)
PREIT’s share	(104,259)	(92,277)
Excess investment	6,986	6,986
Net investments and advances	(97,273)	(85,291)
Investment in partnerships, at equity	7,726	7,845
Distributions in excess of partnership investments	$ (104,999)	$ (93,136)