Net Income (Loss) Per Common Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Earnings Per Share [Abstract]
Basic and diluted net income (loss) attributable to common stockholders	$ (2,306)	$ (582)	$ (21,131)	$ 464
Basic weighted average shares	68,564	36,487	64,689	27,199
Dilutive weighted average shares	68,564	36,487	64,689	27,199
Diluted net income (loss) per share attributable to Parkway Properties, Inc.	$ (0.03)	$ (0.02)	$ (0.33)	$ 0.02

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References+ Details

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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+ Details