Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

The following table represents the components of accounts receivable, net of allowance for doubtful accounts, as of December 31, 2012 and 2011 in the accompanying Consolidated Balance Sheets (in thousands):

		2012		2011
Tenant receivables	$	4,043		4,654
CAM and tax reimbursements		17,891		26,355
Other receivables		8,582		10,166
Less: allowance for doubtful accounts		(3,915	)	(3,442	)
Total	$	26,601		37,733

Property, Plant and Equipment

The following table represents the components of properties in development as of December 31, 2012 and 2011 in the accompanying Consolidated Balance Sheets (in thousands):

		2012	2011
Construction in process	$	133,153	50,903
Construction complete and in lease-up		—	76,301
Land held for future development		58,914	96,873
Total	$	192,067	224,077