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Fair Value measurements - Vessel Fair Value (Table) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2011 Star Ypsilon | Mar. 09, 2012 Star Ypsilon | Dec. 31, 2012 Star Sigma | Dec. 31, 2011 Star Sigma | Dec. 31, 2012 Star Cosmo | Dec. 31, 2012 Star Delta | Dec. 31, 2012 Star Epsilon | Dec. 31, 2012 Star Gamma | Dec. 31, 2012 Star Kappa | Dec. 31, 2012 Star Omicron | Dec. 31, 2012 Star Theta | Dec. 31, 2012 Star Zeta | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) | Dec. 31, 2011 Significant Other Observable Inputs (Level 2) | Dec. 31, 2011 Significant Other Observable Inputs (Level 2) Star Ypsilon | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Star Sigma | Dec. 31, 2011 Significant Other Observable Inputs (Level 2) Star Sigma | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Star Cosmo | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Star Delta | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Star Epsilon | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Star Gamma | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Star Kappa | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Star Omicron | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Star Theta | Dec. 31, 2012 Significant Other Observable Inputs (Level 2) Star Zeta
Fair Value Measurements [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessel value |  |  |  |  | $ 11,152 | $ 8,640 |  |  |  |  |  |  |  |  |  | $ 123,500 | $ 25,500 | $ 11,500 | $ 9,000 | $ 14,000 | $ 14,000 | $ 12,000 | $ 13,000 | $ 14,000 | $ 13,500 | $ 17,750 | $ 15,000 | $ 15,250
Vessel impairment loss | $ 303,219 | $ 62,020 | $ 34,947 | $ 30,754 |  | $ 3,205 | $ 31,266 | $ 45,838 | $ 35,836 | $ 36,756 | $ 36,033 | $ 39,115 | $ 39,841 | $ 36,784 | $ 29,811 |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 45, 46, 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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -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 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228 + Details
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