Discontinued Operations Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2012

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Property Dispositions [Table Text Block]

The following table summarizes the properties sold during the three months ended March 31, 2012.

Location	Property Type	Month of Disposition	Number of Buildings	Rentable Square Feet	Sales Price (in millions)
15004 Innovation Drive and 10243 Genetic Center Drive, San Diego, CA (1)	Office	January	2	253,676	$	146.1

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(1) Properties were classified as held for sale on the consolidated balance sheets as of December 31, 2011.

Components comprising income from discontinued operations

The following table summarizes the components that comprise income from discontinued operations for the three months ended March 31, 2012 and 2011.

	Three Months Ended March 31,
	2012		2011
	(in thousands)
Revenues:
Rental income	$	870	$	3,293
Tenant reimbursements	133		400
Other property income	—		659
Total revenues	1,003		4,352
Expenses:
Property expenses	27		180
Real estate taxes	70		279
Depreciation and amortization	6		870
Total expenses	103		1,329
Income from discontinued operations before net gain on dispositions of discontinued operations	900		3,023
Net gain on dispositions of discontinued operations	72,809		—
Total income from discontinued operations	$	73,709	$	3,023

Schedule of Income from Discontinued Operations by Segment [Table Text Block]

The following table summarizes the total income from discontinued operations within the consolidated statements of operations by segment for the three months ended March 31, 2012 and 2011:

	Three Months Ended March 31,
	2012		2011 (1)
	(in thousands)
Reportable Segment
Office Properties	$	73,709	$	2,309
Non-Reportable Segment
Industrial Properties	—		714
Total income from discontinued operations	$	73,709	$	3,023

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(1) Includes two office and one industrial buildings encompassing 282,611 rentable square feet that were disposed of in 2011.