Noncontrolling Interests (Details) (USD $) In Millions, except Share data, unless otherwise specified			1 Months Ended			1 Months Ended		1 Months Ended				9 Months Ended	1 Months Ended
	Sep. 30, 2014 Joint-venture	Aug. 31, 2012	Apr. 30, 2014 Total Fund II Term-extension	Feb. 10, 2012 Total Fund II	May 14, 2008 Total Fund II	Apr. 30, 2014 Total Fund II TRST	Feb. 10, 2012 Total Fund II TRST	Apr. 30, 2014 Total Fund II Parkway	Feb. 10, 2012 Total Fund II Parkway	Dec. 31, 2013 Thomas Properties Group, Inc	Apr. 14, 2014 Hayden Ferry Lakeside III	Sep. 30, 2014 Murano Condominium Project	Dec. 31, 2013 FLORIDA Office Building Lincoln Place	Sep. 30, 2014 Parkway Properties LP
Real Estate Properties [Line Items]
Number of consolidated joint ventures	2
Target value of discretionary fund					$ 750.0
Target ownership percentage (in percent)							70.00%		30.00%
Target capital structure of equity capital				375.0
Target capital structure of non-recourse, fixed rate first mortgage debt				375.0
Increased discretionary fund capacity		$ 20.0
The Company's Ownership %											70.00%			95.50%
Cumulative preferred return threshold for pro rata cash distributions (in hundredths)			9.00%
Distribution percentage to partners (in hundredths)						56.00%		44.00%
Term of the fund			7 years
Number of term extension provisions			2
Length of extension term			1 year
Ownership interest by noncontolling owners (in percent)												27.00%
Property distributions prior to established return thresholds, percentage												73.00%
Number of shares issued and outstanding common units in operating partnership													900,000
Number of shares outstanding common units in operating partnership										4,300,000