CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
INVESTMENTS IN REAL ESTATE, at cost:
Operating properties	$ 3,156,194	$ 3,168,536
Construction in progress	45,828	46,285
Land held for development	4,339	5,516
Total investments in real estate	3,206,361	3,220,337
Accumulated depreciation	(1,405,260)	(1,308,427)
Net investments in real estate	1,801,101	1,911,910
INVESTMENTS IN PARTNERSHIPS, at equity:	16,525	27,066
OTHER ASSETS:
Cash and cash equivalents	43,852	43,309
Tenant and other receivables (net of allowance for doubtful accounts of $950 and $1,492 at December 31, 2021 and 2020, respectively)	42,501	54,532
Intangible assets (net of accumulated amortization of $21,598 and $19,187 at December 31, 2021 and 2020, respectively)	10,054	11,392
Deferred costs and other assets, net	128,923	127,593
Assets held for sale	8,780	1,384
Total assets	2,051,736	2,177,186
LIABILITIES:
Mortgage loans payable, net	851,283	884,503
Term Loans, net	959,137	908,473
Revolving Facilities	54,549	54,830
Tenants’ deposits and deferred rent	10,180	8,899
Distributions in excess of partnership investments	71,570	76,586
Fair value of derivative instruments	8,427	23,292
Accrued expenses and other liabilities	89,543	93,663
Total liabilities	2,044,689	2,050,246
COMMITMENTS AND CONTINGENCIES (Note 11)
EQUITY:
Shares of beneficial interest, $1.00 par value per share; 200,000 shares authorized; 80,200 and 79,537 shares issued and outstanding at December 31, 2021 and 2020, respectively	80,200	79,537
Capital contributed in excess of par	1,777,013	1,771,777
Accumulated other comprehensive loss	(8,830)	(20,620)
Distributions in excess of net income	(1,832,375)	(1,699,638)
Total equity – Pennsylvania Real Estate Investment Trust	16,162	131,210
Noncontrolling interest	(9,115)	(4,270)
Total equity	7,047	126,940
Total liabilities and equity	2,051,736	2,177,186
Series B Preferred Stock
EQUITY:
Preferred Shares	35	35
Series C Preferred Stock
EQUITY:
Preferred Shares	69	69
Series D Preferred Stock
EQUITY:
Preferred Shares	$ 50	$ 50