Investments in Partnerships - Summary of Share of Equity in Income of Partnerships (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Equity Method Investments and Joint Ventures [Abstract]
Real estate revenue	$ 19,561	$ 18,686	$ 39,788	$ 38,063
Expenses:
Operating expenses	(5,735)	(5,325)	(11,737)	(11,252)
Interest expense	(5,568)	(5,645)	(11,117)	(11,299)
Depreciation and amortization	(3,534)	(3,590)	(7,106)	(7,201)
Total expenses	(14,837)	(14,560)	(29,960)	(29,752)
Net income	4,724	4,126	9,828	8,311
Less: Partners’ share	(2,339)	(2,067)	(4,885)	(4,154)
PREIT’s share	2,385	2,059	4,943	4,157
Amortization of excess investment	(102)	(107)	(207)	(212)
Equity in income of partnerships	$ 2,283	$ 1,952	$ 4,736	$ 3,945