Investments in Partnerships - Summary of Share of Equity in Income of Partnerships (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Equity Method Investments and Joint Ventures [Abstract]
Real estate revenue	$ 20,153	$ 19,530	$ 59,941	$ 57,594
Expenses:
Operating expenses	(6,037)	(5,755)	(17,774)	(17,006)
Interest expense	(5,539)	(5,640)	(16,659)	(16,939)
Depreciation and amortization	(3,695)	(3,600)	(10,801)	(10,801)
Total expenses	(15,271)	(14,995)	(45,234)	(44,746)
Net income	4,882	4,535	14,707	12,848
Less: Partners’ share	(2,435)	(2,267)	(7,318)	(6,422)
PREIT’s share	2,447	2,268	7,389	6,426
Amortization of excess investment	(102)	(104)	(308)	(316)
Equity in income of partnerships	$ 2,345	$ 2,164	$ 7,081	$ 6,110