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CONSOLIDATED STATEMENTS OF CHANGES IN TOTAL EQUITY (Parenthetical) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2010
Offering cost from follow-on public offer | $ 15,000 | $ 6,900 | $ 100
Percentage Interest on Sale | 1.00% |  |

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- Definition Costs incurred in connection with the offering and selling of additional partner interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 5.D.Q1) -URI http://asc.fasb.org/extlink&oid=6488002&loc=d3e600348-122990 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section D + Details
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