Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Segment Reporting Information [Line Items]
Income from office and parking properties	$ 50,104		$ 35,514		$ 95,959	$ 63,321
Management company income	4,973		3,532		10,405	3,870
Property operating expenses	(19,657)		(14,196)		(37,976)	(25,193)
Depreciation and amortization	(19,548)		(12,017)		(37,534)	(21,097)
Management company expenses	(4,226)		(3,150)		(8,760)	(3,954)
Income tax benefit (expense)	11		(224)		(150)	(224)
General and administrative expenses	(3,918)		(3,709)		(7,517)	(7,465)
Acquisition costs	(506)		(14,380)		(1,332)	(16,729)
Other income	44		438		141	762
Equity in earnings of unconsolidated joint ventures	0		54		0	95
Interest expense	(8,536)		(7,669)		(17,780)	(14,077)
Adjustment for noncontrolling - unit holders	73		0		(16)	0
Adjustment for noncontrolling - real estate partnerships	1,426		3,371		893	6,566
Income (loss) from discontinued operations	(664)		(4,085)		2,589	(6,991)
Gain on sale of real estate from discontinued operations	3,197		4,292		8,772	4,292	17,825	[1]
Change in fair value of contingent consideration	0		0		(216)	0
Dividends on preferred stock	(2,710)		(2,444)		(5,421)	(4,631)
Dividends on convertible preferred stock	(1,011)		0		(1,011)	0
Net income (loss) attributable to common stockholders	(948)		(14,673)		1,046	(21,455)
Depreciation and amortization	19,548		12,017		37,534	21,097
Depreciation and amortization - discontinued operations	153		15,099		571	30,919
Depreciation and amortization noncontrolling interest - real estate partnerships	(8,135)		(8,214)		(16,176)	(13,777)
Adjustment for depreciation and amortization-unconsolidated joint ventures	0		72		22	160
Adjusted for noncontrolling interest-unit holders	(73)		0		16	0
Impairment loss on real estate-discontinued operations	0		1,700		0	1,700
Gain on sale of real estate for discontinued operations (Parkway's share)	(2,601)		(4,292)		(4,934)	(4,292)
Funds from operations available to common stockholders	7,944		1,709		18,079	14,352
Total assets	1,597,658		2,089,688		1,597,658	2,089,688	1,636,311
Office and parking properties	1,249,133		1,719,258		1,249,133	1,719,258	921,937
Capital expenditures	8,938		18,153		18,641	27,648
Office Properties [Member]
Segment Reporting Information [Line Items]
Income from office and parking properties	50,104	[2]	35,514	[2]	95,959	63,321
Management company income	0		0		0	0
Property operating expenses	(19,657)	[3]	(14,196)	[3]	(37,976)	(25,193)
Depreciation and amortization	(19,548)		(12,017)		(37,534)	(21,097)
Management company expenses	0		0		0	0
Income tax benefit (expense)	0		0		0	0
General and administrative expenses	0		0		0	0
Acquisition costs	(506)		(14,380)		(1,332)	(2,764)
Other income	0		0		0	0
Equity in earnings of unconsolidated joint ventures	0		54		0	95
Interest expense	(7,809)	[4]	(5,994)	[4]	(15,756)	(10,296)
Adjustment for noncontrolling - unit holders	0		0		0	0
Adjustment for noncontrolling - real estate partnerships	1,426		3,371		893	6,566
Income (loss) from discontinued operations	(664)		(4,085)		2,589	(6,991)
Gain on sale of real estate from discontinued operations	3,197		4,292		8,772	4,292
Change in fair value of contingent consideration					0	0
Dividends on preferred stock	0		0		0	0
Dividends on convertible preferred stock	0		0		0	0
Net income (loss) attributable to common stockholders	6,543		(7,441)		15,615	7,933
Depreciation and amortization	19,548		12,017		37,534	21,097
Depreciation and amortization - discontinued operations	153		15,099		571	30,919
Depreciation and amortization noncontrolling interest - real estate partnerships	(8,135)		(8,214)		(16,176)	(13,777)
Adjustment for depreciation and amortization-unconsolidated joint ventures	0		72		22	160
Adjusted for noncontrolling interest-unit holders	0		0		0	0
Impairment loss on real estate-discontinued operations	0		1,700		0	1,700
Gain on sale of real estate for discontinued operations (Parkway's share)	(2,601)		(4,292)		(4,934)	(4,292)
Funds from operations available to common stockholders	15,508		8,941		32,632	43,740
Total assets	1,510,051		2,005,796		1,510,051	2,005,796
Office and parking properties	1,249,133		1,719,258		1,249,133	1,719,258
Capital expenditures	8,938	[5]	18,153	[5]	18,641	27,648
Unallocated and Other [Member]
Segment Reporting Information [Line Items]
Income from office and parking properties	0		0		0	0
Management company income	4,973		3,532		10,405	3,870
Property operating expenses	0		0		0	0
Depreciation and amortization	0		0		0	0
Management company expenses	(4,226)		(3,150)		(8,760)	(3,954)
Income tax benefit (expense)	11		(224)		(150)	(224)
General and administrative expenses	(3,918)		(3,709)		(7,517)	(7,465)
Acquisition costs	0		0		0	(13,965)
Other income	44		438		141	762
Equity in earnings of unconsolidated joint ventures	0		0		0	0
Interest expense	(727)	[4]	(1,675)	[4]	(2,024)	(3,781)
Adjustment for noncontrolling - unit holders	73		0		(16)	0
Adjustment for noncontrolling - real estate partnerships	0		0		0	0
Income (loss) from discontinued operations	0		0		0	0
Gain on sale of real estate from discontinued operations	0		0		0	0
Change in fair value of contingent consideration					(216)	0
Dividends on preferred stock	(2,710)		(2,444)		(5,421)	(4,631)
Dividends on convertible preferred stock	(1,011)		0		(1,011)	0
Net income (loss) attributable to common stockholders	(7,491)		(7,232)		(14,569)	(29,388)
Depreciation and amortization	0		0		0	0
Depreciation and amortization - discontinued operations	0		0		0	0
Depreciation and amortization noncontrolling interest - real estate partnerships	0		0		0	0
Adjustment for depreciation and amortization-unconsolidated joint ventures	0		0		0	0
Adjusted for noncontrolling interest-unit holders	(73)		0		16	0
Impairment loss on real estate-discontinued operations	0		0		0	0
Gain on sale of real estate for discontinued operations (Parkway's share)	0		0		0	0
Funds from operations available to common stockholders	(7,564)		(7,232)		(14,553)	(29,388)
Total assets	87,607		83,892		87,607	83,892
Office and parking properties	0		0		0	0
Capital expenditures	$ 0		$ 0		$ 0	$ 0

[1] Total gain on the sale of real estate in discontinued operations recognized for the year ended December 31, 2011 was $17.8 million, of which $9.8 million was Parkway's proportionate share.

[2] Included in income from office and parking properties are rental revenues, customer reimbursements, parking income and other income.

[3] Included in property operating expenses are real estate taxes, insurance, contract services, repairs and maintenance and property operating expenses

[4] Interest expense for office properties represents interest expense on property secured mortgage debt. It does not include interest expense on the Company's unsecured credit facilities, which is included in "Unallocated and Other".

[5] Capital expenditures include building improvements, tenant improvements and leasing costs.