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Note 6 - Adjustment of Property Carrying Values and Real Estate Under Development (Detail) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Income Tax Expense (Benefit) | $ 3,939,000 | $ 21,330,000 | $ 3,208,000
Number of Real Estate Properties | 28 |  |
Real Estate Investment Property, Net (in Dollars) | 7,201,825,069 | 7,078,167,000 |
Sold [Member] | Impairments [Member] |  |  |
Number of Real Estate Properties |  |  | 4
Operating Properties [Member] | Impairments [Member] |  |  |
Impairment of Real Estate (in Dollars) |  | 3,900,000 |
Income Tax Expense (Benefit) |  | 1,100,000 |
Number of Real Estate Properties | 4 | 2 |
Operating Properties [Member] |  |  |
Number of Real Estate Properties | 24 |  |
Pre-Impairment [Member] | Impairments [Member] |  |  |
Real Estate Investment Property, Net (in Dollars) | 86,600,000 | 9,200,000 |
Impairments [Member] | Ground Up Developments [Member] |  |  |
Impairment of Real Estate (in Dollars) |  |  | 11,700,000
Impairments [Member] |  |  |
Real Estate Investment Property, Net (in Dollars) | 52,500,000 |  |
Impairments [Member] | Land Parcels [Member] |  |  |
Number of Real Estate Properties |  | 1 |
Impairments [Member] | Under Development [Member] |  |  |
Number of Real Estate Properties |  |  | 1
Impairments [Member] | Ground Up Developments [Member] |  |  |
Number of Real Estate Properties |  |  | 1
Impairments [Member] | Segment, Discontinued Operations [Member] |  |  |
Impairment of Real Estate (in Dollars) |  |  | 5,200,000
Impairments [Member] |  |  |
Impairment of Real Estate (in Dollars) | 34,100,000 |  | 8,700,000
Income Tax Expense (Benefit) | 10,700,000 | 400,000 | 0
Number of Real Estate Properties |  |  | 7
Real Estate Investment Property, Net (in Dollars) |  | $ 5,300,000 |
Ground Up Developments [Member] |  |  |
Number of Real Estate Properties | 3 |  |

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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 The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph a, 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. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Income Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6515339 + Details
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- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + 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(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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