Investment in Office Properties - Summary of 2012 Acquisitions (Details) (USD $)	3 Months Ended								12 Months Ended					0 Months Ended					12 Months Ended	0 Months Ended			0 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2013 sqft	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013 sqft	Dec. 31, 2012	Dec. 31, 2011	Mar. 09, 2012 sqft	Feb. 10, 2012	Jan. 11, 2012 The Pointe [Member] Parkway Properties Office Fund II, LP sqft	Feb. 10, 2012 Hayden Ferry Lakeside II [Member] Parkway Properties Office Fund II, LP sqft	Jun. 06, 2012 Hearst Tower [Member] sqft	Aug. 31, 2012 Hayden Ferry Lakeside III, IV, V sqft	Nov. 15, 2012 Westshore Corporate Center [Member] sqft	Dec. 31, 2013 Westshore Corporate Center [Member]	Dec. 06, 2012 525 North Tryon [Member] sqft	Dec. 20, 2012 Phoenix Tower [Member] sqft	Feb. 20, 2013 Phoenix Tower [Member]	Dec. 21, 2012 Tempe Gateway [Member] sqft	Dec. 31, 2012 NASCAR Plaza [Member]	Dec. 31, 2013 NASCAR Plaza [Member] sqft	Jan. 02, 2013 NASCAR Plaza [Member]	Dec. 31, 2012 All Acquisitions [Member]
Business Acquisition [Line Items]
Area of real estate property (in square feet)	17,600,000								17,600,000			337,000		252,000	300,000	972,000	21,000	170,000		402,000	626,000		251,000		390,000
Total Purchase Price										$ 898,400,000				$ 46,900,000	$ 86,000,000	$ 250,000,000	$ 18,200,000	$ 22,700,000		$ 47,400,000	$ 123,800,000		$ 66,100,000	$ 99,900,000
Ownership interest acquired (in percent)														30.00%	30.00%		30.00%
Equity contribution in a business combination														7,000,000	10,800,000		5,500,000
Number of parking spaces in parking structure																	2,500
Year constructed																			1989						2009
Mortgage assumed in a business acquisition																		14,500,000							42,600,000
Interest rate on mortgage (in percent)													1.50%					5.80%							4.70%
Mortgage loan maturity date																			May 01, 2015						Mar. 30, 2016
Note balance	1,081,597,000								1,081,597,000										15,700,000						43,000,000
Non-recourse mortgage loan																						80,000,000
Fixed rate (in percent)												7.10%						2.50%				3.90%			3.40%
Real estate leased percentage																										87.50%
Revenues	77,465,000	73,325,000	72,623,000	68,165,000	57,357,000	55,967,000	50,505,000	46,667,000	291,578,000	210,496,000	147,297,000																32,000,000
Net income (loss) attributable to common stockholders	$ (8,557,000)	$ (2,306,000)	$ (14,945,000)	$ (3,879,000)	$ (51,713,000)	$ (582,000)	$ (948,000)	$ 1,994,000	$ (29,687,000)	$ (51,249,000)	$ (136,955,000)																$ 2,400,000