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Note 3 - Discontinued Operations (Detail) (USD $) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2012 sqft | Jun. 30, 2011 | Dec. 31, 2011 sqft
Number of Real Estate Properties | 29 |  |  | 690
(in Square feet) | 1,863,000 | [1] |  | 84,400,000
Real Estate Investment Property, Net | $ 7,087,796,000 |  |  | $ 6,898,445,000
Real Estate Investment Property, Accumulated Depreciation | 1,743,276,000 |  |  | 1,693,090,000
Impairment of Real Estate | 34,600,000 |  | 12,400,000 |
Fair Value Of Real Estate | 28,694,000 |  |  | 5,289,000
Assets Held-for-sale [Member] | Operating Properties [Member] | Impairment of Property Carrying Value [Member] |  |  |  |
Number of Real Estate Properties | 1 |  |  |
Assets Held-for-sale [Member] | Operating Properties [Member] | Sold [Member] |  |  |  |
Number of Real Estate Properties | 3 |  |  |
Assets Held-for-sale [Member] | Operating Properties [Member] |  |  |  |
Number of Real Estate Properties | 2 |  |  |
Assets Held-for-sale [Member] | Land Parcel [Member] | Sold [Member] |  |  |  |
Number of Real Estate Properties | 1 |  |  |
Assets Held-for-sale [Member] | Remaining [Member] |  |  |  |
Real Estate Investment Property, Accumulated Depreciation | 1,700,000 |  |  |
Real Estate Held-for-sale | 2,800,000 |  |  |
Assets Held-for-sale [Member] |  |  |  |
(in Square feet) | 200,000 |  |  |
Real Estate Investment Property, Net | 14,800,000 |  |  |
Real Estate Investment Property, Accumulated Depreciation | 6,300,000 |  |  |
Impairment of Real Estate | 3,400,000 |  |  |
Fair Value Of Real Estate | 8,600,000 |  |  |
Impairment of Property Carrying Value [Member] |  |  |  |
Number of Real Estate Properties | 4 |  |  |
Impairment of Real Estate | 25,600,000 |  |  |
Fair Value Of Real Estate | $ 28,700,000 |  |  |
[1] | Gross leasable area ("GLA")

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- Definition The charge against earnings in the period to reduce the carrying amount of real property to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 26 -Subparagraph b -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. + Details
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- Definition Carrying amount as of the balance sheet date of investments in land and buildings held for sale, excluding real estate considered to be inventory of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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