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Real Estate - Held For Sale (Details) (USD $) In Thousands, unless otherwise specified | 1 Months Ended |  |  | 3 Months Ended |
--- | --- | --- | --- | --- | ---
Mar. 31, 2013 properties | Dec. 31, 2012 properties | Mar. 31, 2012 properties | Mar. 31, 2013 Assets Held-for-sale [Member] | Mar. 31, 2012 Assets Held-for-sale [Member] | Dec. 31, 2012 Assets Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |
Number of real estate held-for-sale reclassified to held-for-investment | 15 |  |  |  |  |  |  |  |  |
Number Of Properties Classified As Held For Sale | 13 |  | 23 |  |  |  |  |  |  |
Number Of Improved Properties Held for Sale | 10 |  | 16 |  |  |  |  |  |  |
Number of Land Parcels Held for Sale | 3 |  | 7 |  |  |  |  |  |  |
Land and improvements | $ 11,821 |  | $ 11,419 |  |  |  |  |  |  |
Building and improvements | 17,853 |  | 17,776 |  |  |  |  |  |  |
Work in process | 600 |  | 72 |  |  |  |  |  |  |
Real Estate Held-for-sale | 30,274 |  | 29,267 |  |  |  |  |  |  |
Less accumulated depreciation and amortization |  |  |  |  |  | (1,619) |  |  |  | (1,606)
Less impairment | (5,163) |  | (4,124) |  |  |  |  |  |  |
Inventory, Real Estate, Held-for-sale | 23,492 |  | 23,537 |  |  |  |  |  |  |
Number of Sold Properties | 2 | [1] |  | 3 | [1] |  |  |  |  |
Gain on disposition of real estate |  |  |  |  |  | $ 505 | [1] | $ 314 | [1] |
[1] | None of the gains from property sales for the period were reported in continuing operations.

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- Definition The gains (losses) included in earnings resulting from the sale or disposal of tangible assets. This item does not include any gain (loss) recognized on the sale of oil and gas property or timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 47 -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 parcels of land held for sale, and on which the entity has no intention or no further intention to perform construction activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 6 -Subparagraph a -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section A -Paragraph 9 -Chapter 3 -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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