Basis of Presentation and Summary of Significant Accounting Policies (Details)	Mar. 31, 2015 State	Apr. 01, 2015 Property sqft State
Entity Information [Line Items]
Number of states in which office properties located	7
Percentage of noncontrolling interest in Operating Partnerships	4.30%
Subsequent Event
Entity Information [Line Items]
Number of real estate properties		50
Number of states in which office properties located		7
Net rentable area (sqft)		17,100,000
Subsidiaries | Subsequent Event
Entity Information [Line Items]
Net rentable area (sqft)		4,300,000
Parkway Properties LP
Entity Information [Line Items]
Company's Ownership %	95.70%