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Fair value measurements (Tables) | 12 Months Ended
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Dec. 31, 2014
Fair Value Measurements [Abstract] |
Derivative instruments effect on other comprehensive income loss |
Consolidated Statement of Comprehensive Income/(Loss) |  | 2012 |  |  | 2013 |  |  | 2014 |
Unrealized loss from hedging interest rate swaps recognized in Other Comprehensive loss before reclassifications | $ | - |  | $ | - |  | $ | (1,433 | )
Reclassification adjustments of interest rate swap loss transferred to Interest and finance costs |  | - |  |  | - |  |  | 1,055 |
Unrealized loss from hedging interest rate swaps, net | $ | - |  | $ | - |  | $ | (378 | )
Derivative instruments effect on statement of operations |
Consolidated Statement of Operations |  |  |  |  |  |  |  |  |
|  | 2012 |  |  | 2013 |  |  | 2014 |
Gain/(loss) on derivative instruments, net |  |  |  |  |  |  |  |  |
Gains/(losses) from freight derivatives | $ | 41 |  | $ | - |  | $ | - |
Unrealized gains/(losses) from the Credit Agricole Swaps and the HSH Swaps before hedging designation (August 31, 2014) |  | - |  |  | 91 |  |  | (799 | )
Ineffective portion of cash flow hedges following hedging designation |  | - |  |  | - |  |  | - |
Total Gains/(Losses) on derivative instruments, net | $ | 41 |  | $ | 91 |  | $ | (799) |
Interest and finance costs |  |  |  |  |  |  |  |  |
Reclassification adjustments of interest rate swap loss transferred to Interest and finance costs from Other Comprehensive loss |  | - |  |  | - |  |  | (1,055 | )
Total Gains/(Losses) recognized | $ | 41 |  | $ | 91 |  | $ | (1,854) |
Fair value measurements on recurring basis |
|  | Significant Other Observable Inputs (Level 2) |
|  | 2013 |  |  | 2014 |
|  | (not designated as cash flow hedges) |  |  | (designated as cash flow hedges) |
ASSETS |  |  |  |  |  |
Interest rate swaps - asset position | $ | 91 |  | $ | - |
Total | $ | 91 |  | $ | - |
LIABILITIES |  |  |  |  |  |
Interest rate swaps - liability position (current and non-current) | $ | - |  | $ | 7,732 |
Total | $ | - |  | $ | 7,732 |
Fair value measurements on Non recurring basis |
Fair Value Measurements Using
Vessel | Quoted Prices in Active Markets for Identical Assets | Significant Other Observable Inputs | Significant Unobservable Inputs | Vessel impairment loss |
| (Level 1) | (Level 2) | (Level 3) |  |
Star Cosmo | - | 14,000 | - | 45,838 |
Star Delta | - | 12,000 | - | 35,836 |
Star Epsilon | - | 13,000 | - | 36,756 |
Star Gamma | - | 14,000 | - | 36,033 |
Star Kappa | - | 13,500 | - | 39,115 |
Star Omicron | - | 17,750 | - | 39,841 |
Star Theta | - | 15,000 | - | 36,784 |
Star Zeta | - | 15,250 | - | 29,811 |
Star Sigma | - | 9,000 | - | 3,205 |
TOTAL | - | 123,500 | - | 303,219 |

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- Definition Tabular disclosure of fair value measurements on a nonrecurring basis. + References No definition available. + Details
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- Definition Tabular disclosure of the effective portion of the gains and losses on derivative instruments designated (and non-derivative instruments) designated and qualifying in cash flow hedges and net investment hedges that was recognized in other comprehensive income (loss) during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of derivative instruments (including nonderivative instruments that are designated and qualify as hedging instruments) of (a) the location and amount of gains and losses reported in the statement of financial performance and (b) the location and fair value amounts of the instruments reported in the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5618551-113959 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258 + Details
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