Net Income (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Numerator:
Basic net income (loss) attributable to common stockholders	$ 37,251	$ (485)	$ 58,658	$ 515
Effect of net income (loss) attributable to noncontrolling interests - unit holders	1,617	0	2,572	(58)
Diluted net income (loss) attributable to common stockholders	$ 38,868	$ (485)	$ 61,230	$ 457
Denominator:
Basic weighted average shares outstanding (in shares)	111,583	100,016	111,449	98,825
Diluted adjusted weighted average shares outstanding (in shares)	116,723	100,016	116,667	104,217
Basic net income per share attributable to Parkway Properties, Inc. (in dollars per shares)	$ 0.33	$ 0.00	$ 0.53	$ 0.01
Diluted net income per share attributable to Parkway Properties, Inc. (in dollars per share)	$ 0.33	$ 0.00	$ 0.52	$ 0.00
Effect of Operating Partnership units
Denominator:
Effect of share-based compensation (in shares)	4,833	0	4,926	5,200
Effect of RSUs
Denominator:
Effect of share-based compensation (in shares)	216	0	201	168
Effect of restricted shares
Denominator:
Effect of share-based compensation (in shares)	5	0	5	13
Effect of deferred incentive share units
Denominator:
Effect of share-based compensation (in shares)	1	0	3	11
Effect of LTIP units
Denominator:
Effect of share-based compensation (in shares)	85	0	83	0