Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2014

Segment Reporting [Abstract]

Reconciliation of Revenue from Segments to Consolidated

	Three Months Ended March 31,
	2014		2013
Revenues
Rental Operations:
Industrial	$	134,002	$	114,700
Office	66,972		61,197
Medical Office	33,310		30,484
Non-reportable Rental Operations	2,087		2,301
Service Operations	55,820		47,404
Total segment revenues	292,191		256,086
Other revenue	979		1,197
Consolidated revenue from continuing operations	293,170		257,283
Discontinued operations	1,368		16,404
Consolidated revenue	$	294,538	$	273,687

Summary of Net Operation Income

	Three Months Ended March 31,
	2014			2013
PNOI
Industrial	$	91,909		$	81,279
Office	36,264			36,816
Medical Office	20,577			16,502
Non-reportable Rental Operations	1,105			971
Total PNOI	149,855			135,568
Earnings from Service Operations	8,549			9,063
Rental Operations revenues and expenses excluded from PNOI:
Straight-line rental income and expense, net	6,463			4,270
Revenues related to lease buyouts	2,695			1,993
Amortization of lease concessions and above and below market rents	(2,467		)	(1,897		)
Intercompany rents and other adjusting items	(1,142		)	(1,034		)
PNOI from sold properties included in continuing operations	(96		)	2,767
Non-Segment Items:
Equity in earnings of unconsolidated companies	2,321			49,378
Interest expense	(55,257		)	(57,181		)
Depreciation expense	(98,059		)	(92,993		)
Gain on sale of properties	15,853			168
Interest and other income, net	351			153
Other operating expenses	(92		)	(68		)
General and administrative expenses	(14,694		)	(13,145		)
Gain on land sales	152			—
Undeveloped land carrying costs	(2,124		)	(2,198		)
Acquisition-related activity	(14		)	643
Other non-segment revenues and expenses, net	(692		)	311
Income from continuing operations before income taxes	$	11,602		$	35,798

Reportable Segments Consolidated Assets

	March 31, 2014		December 31, 2013
Assets
Rental Operations:
Industrial	$	4,438,376	$	4,414,740
Office	1,527,997		1,524,501
Medical Office	1,155,112		1,170,420
Non-reportable Rental Operations	79,899		81,056
Service Operations	151,724		145,222
Total segment assets	7,353,108		7,335,939
Non-segment assets	414,255		416,675
Consolidated assets	$	7,767,363	$	7,752,614