Basis of Presentation and Summary of Significant Accounting Policies (Details) ft² in Millions	Jul. 01, 2015 ft² Property State	Jun. 30, 2015 State
Entity Information [Line Items]
Number of states in which office properties located | State		7
Percentage of noncontrolling interest in Operating Partnerships		4.10%
Subsequent Event
Entity Information [Line Items]
Number of real estate properties | Property	44
Number of states in which office properties located | State	7
Net rentable area (sqft)	16.2
Subsidiaries | Subsequent Event
Entity Information [Line Items]
Net rentable area (sqft)	4.2
Parkway Properties LP
Entity Information [Line Items]
Company's Ownership %		95.90%