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Basis of Presentation and General Information (Tables) | 12 Months Ended
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Dec. 31, 2012
Basis of Presentation and General Information [Abstract] |
List of Subsidiaries |
Wholly Owned Subsidiaries |  | Vessel Name |  | DWT |  | Date Delivered to Star Bulk |  | Year Built
Star Bulk Management Inc. |  | — |  | — |  | — |  | —
Starbulk S.A. |  | — |  | — |  | — |  | —
Star Bulk Manning LLC |  | — |  | — |  | — |  | —
|  | Vessels in operation at December 31, 2012 |  |  |  |  |  |
Star Aurora LLC |  | Star Aurora |  | 171.199 |  | September 8, 2010 |  | 2000
Star Big LLC |  | Star Big |  | 168.404 |  | July 25, 2011 |  | 1996
Star Borealis LLC |  | Star Borealis |  | 179.678 |  | September 9, 2011 |  | 2011
Star Mega LLC |  | Star Mega |  | 170.631 |  | August 16, 2011 |  | 1994
Star Polaris LLC |  | Star Polaris |  | 179.546 |  | November 14, 2011 |  | 2011
Lamda LLC |  | Star Sigma |  | 184.403 |  | April 15, 2008 |  | 1991
Star Cosmo LLC |  | Star Cosmo |  | 52.247 |  | July 1, 2008 |  | 2005
Star Delta LLC |  | Star Delta (ex F Duckling) |  | 52.434 |  | January 2, 2008 |  | 2000
Star Epsilon LLC |  | Star Epsilon (ex G Duckling) |  | 52.402 |  | December 3, 2007 |  | 2001
Star Gamma LLC |  | Star Gamma (ex C Duckling) |  | 53.098 |  | January 4, 2008 |  | 2002
Star Kappa LLC |  | Star Kappa (ex E Duckling) |  | 52.055 |  | December 14, 2007 |  | 2001
Star Omicron LLC |  | Star Omicron |  | 53.489 |  | April 17, 2008 |  | 2005
Star Theta LLC |  | Star Theta (ex J Duckling) |  | 52.425 |  | December 6, 2007 |  | 2003
Star Zeta LLC |  | Star Zeta (ex I Duckling) |  | 52.994 |  | January 2, 2008 |  | 2003
|  | Vessels disposed* |  |  |  |  |  |
Star Alpha LLC |  | Star Alpha (ex A Duckling) |  | 175.075 |  | January 9,2008 |  | 1992
Star Beta LLC |  | Star Beta (ex B Duckling) |  | 174.691 |  | December 28, 2007 |  | 1993
Star Ypsilon LLC |  | Star Ypsilon |  | 150.940 |  | September 18, 2008 |  | 1991
Charterer Revenue Percentage |
Charterer |  | 2010 |  | 2011 |  | 2012
A |  | 21% |  | - |  | -
B |  | 17% |  | - |  | -
C |  | 13% |  | 12% |  | -
D |  | 10% |  | 13% |  | -
E |  | 14% |  | 12% |  | 14%
F |  | 12% |  | 19% |  | 15%
G |  | - |  | 15% |  | 28%
H |  | - |  | - |  | 10%

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- Definition Tabular disclosure of the entity's subsidiaries. + References No definition available. + Details
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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 39 + Details
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