Balance Sheet Parenthetical (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Accounts receivable, allowance	$ 2,693	$ 3,597
Straight-line rent receivable, allowance	6,997	7,447
Deferred financing costs, accumulated amortization	(42,720)	(59,109)
Deferred leasing and other costs, accumulated amortization	$ 311,525	$ 292,334
Common equity, General Partner Units issued	266,405	252,927
Common equity, General Partner Units outstanding	266,405	252,927
Preferred Units, Issued	2,503	3,176
Preferred Units, Outstanding	2,503	3,176
Limited Partner Units issued	4,676	6,945
Limited Partner Units outstanding	4,676	6,945

For an unclassified balance sheet, the accumulated amortization, as of the reporting date, which represents the periodic charge to earnings of initial direct costs which have been deferred and are being allocated over the lease term in proportion to the recognition of rental income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 19

-Subparagraph c

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 25

-Paragraph 16

-URI http://asc.fasb.org/extlink&oid=6748888&loc=d3e40588-112709

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6453741&loc=d3e40879-112712

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Balance Type:	credit
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