Net Income Per Common Share (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income attributable to common stockholders	$ 7,275	$ 10,845
Effect of net income attributable to noncontrolling interests - unit holders	348	564
Diluted net income attributable to common stockholders	$ 7,623	$ 11,409
Basic weighted average shares outstanding	111,216	97,356
Diluted adjusted weighted average shares outstanding	116,531	102,614
Basic and diluted net income per share attributable to Parkway Properties, Inc. (in dollars per share)	$ 0.07us-gaap_EarningsPerShareBasicAndDiluted	$ 0.11us-gaap_EarningsPerShareBasicAndDiluted
Operating Partnership Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of share-based compensation (in shares)	5,114	5,200
Stock Options
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of share-based compensation (in shares)	0	29
Restricted Stock Units (RSUs)
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of share-based compensation (in shares)	189	15
Restricted Stock
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of share-based compensation (in shares)	6	0
Deferred Incentive Share Units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of share-based compensation (in shares)	6	14

Dilutive Securities, Effect on Basic Earnings, Net Income (Loss), Noncontrolling Interest

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

+ References

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions.

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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.

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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.

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