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Fair Value of Above/Below Market Acquired Time Charters and Gain/Loss on Time Charter Agreement Termination - Amount per Vessel (Table) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  | 2 Months Ended | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2009 Star Epsilon | Dec. 31, 2009 Star Theta | Dec. 31, 2009 Star Alpha | Dec. 31, 2009 Star Delta | Feb. 17, 2011 Star Cosmo | Dec. 31, 2011 Star Cosmo | Dec. 31, 2010 Star Cosmo | Dec. 31, 2009 Star Cosmo | Dec. 31, 2009 Star Kappa | Dec. 31, 2009 Star Ypsilon | Dec. 31, 2012 Star Big | Dec. 31, 2011 Star Big | Dec. 31, 2010 Star Big | Dec. 31, 2012 Star Mega | Dec. 31, 2011 Star Mega | Dec. 31, 2010 Star Mega
Fair value of below market acquired time charter |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of below market acquired time charter |  |  |  | $ 91,409 | $ 14,375 | $ 12,397 | $ 46,966 | $ 13,815 |  |  |  | $ 3,856 |  |  |  |  |  |  |  |
Accumulated amortization as of December 31, 2009 |  |  |  | 89,597 | 14,375 | 12,397 | 46,966 | 13,815 |  |  |  | 2,044 |  |  |  |  |  |  |  |
Balance at beginning of year | 0 | 452 | 1,812 |  | 0 | 0 | 0 | 0 | 452 | 452 | 1,812 |  |  |  |  |  |  |  |  |
Amortization | 0 | 452 | 1,360 |  |  |  |  |  |  | 452 | 1,360 |  |  |  |  |  |  |  |  |
Balance at end of year |  | 0 | 452 |  | 0 | 0 | 0 | 0 |  | 0 | 452 |  |  |  |  |  |  |  |  |
Fair value of above market acquired time charter |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of above market acquired time charter |  |  | 23,065 | 39,462 |  |  |  |  |  |  |  |  | 1,980 | 14,417 |  |  | 13,733 |  |  | 9,332
Accumulated amortization as of December 31, 2009 |  |  |  | 16,397 |  |  |  |  |  |  |  |  | 1,980 | 14,417 |  |  |  |  |  |
Balance at beginning of year | 20,699 |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,553 |  |  | 8,146 |  |
Amortization | 6,369 | 2,366 | 0 |  |  |  |  |  | 273 |  |  |  |  |  | 3,224 | 1,180 |  | 3,145 | 1,186 |
Balance at end of year | $ 14,330 | $ 20,699 |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,329 | $ 12,553 |  | $ 5,001 | $ 8,146 |

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