Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2012

Segment Reporting [Abstract]

Summary on Revenues and Funds from Operations

	Three Months Ended March 31,
	2012			2011
Revenues
Rental Operations:
Industrial	$	108,487		$	94,262
Office	67,417			75,602
Medical Office	20,741			13,484
Non-reportable Rental Operations	5,658			5,655
General contractor and service fee revenue (“Service Operations”)	68,968			146,547
Total Segment Revenues	271,271			335,550
Other Revenue	1,129			1,983
Consolidated Revenue from continuing operations	272,400			337,533
Discontinued Operations	1,234			52,170
Consolidated Revenue	$	273,634		$	389,703
Reconciliation of Funds From Operations
Net earnings excluding depreciation and Non-Segment Items
Industrial	$	79,902		$	66,726
Office	39,490			43,100
Medical Office	13,667			7,802
Non-reportable Rental Operations	4,008			4,207
Service Operations	5,047			10,883
	142,114			132,718
Non-Segment Items:
Interest expense	(61,086		)	(52,124		)
Interest and other income	146			87
Other operating expenses	(265		)	(85		)
General and administrative expenses	(11,839		)	(11,197		)
Undeveloped land carrying costs	(2,298		)	(2,309		)
Acquisition-related activity	(580		)	(589		)
Other non-segment income	352			981
Net (income) loss attributable to noncontrolling interests	643			(1,083		)
Noncontrolling interest share of FFO adjustments	(2,060		)	(569		)
Joint venture items	10,095			8,610
Dividends on preferred shares	(13,193		)	(15,974		)
Adjustments for redemption/repurchase of preferred shares	(5,730		)	(163		)
Discontinued operations	(106		)	11,756
FFO attributable to common shareholders	56,193			70,059
Depreciation and amortization on continuing operations	(91,613		)	(77,822		)
Depreciation and amortization on discontinued operations	(643		)	(17,159		)
Company’s share of joint venture adjustments	(8,586		)	(7,628		)
Earnings from depreciated property sales on continuing operations	(277		)	67,856
Earnings from depreciated property sales on discontinued operations	6,476			11,603
Earnings from depreciated property sales—share of joint venture	—			91
Noncontrolling interest share of FFO adjustments	2,060			569
Net income (loss) attributable to common shareholders	$	(36,390	)	$	47,569

Reportable Segments Consolidated Assets

	March 31, 2012		December 31, 2011
Assets
Rental Operations:
Industrial	$	3,634,930	$	3,586,250
Office	1,683,691		1,742,196
Medical Office	674,298		580,177
Non-reportable Rental Operations	202,139		209,056
Service Operations	162,468		167,382
Total Segment Assets	6,357,526		6,285,061
Non-Segment Assets	514,879		719,376
Consolidated Assets	$	6,872,405	$	7,004,437