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Commitments and Contingencies 1 (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 5 Months Ended | 8 Months Ended | 10 Months Ended | 11 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2013 USD ($) | Mar. 31, 2012 USD ($) | Jun. 04, 2013 shares | Sep. 05, 2012 USD ($) | Oct. 31, 2013 USD ($) | Oct. 31, 2011 USD ($) | Nov. 30, 2013 shares | Nov. 19, 2012 USD ($) shares | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2015 ₩ / shares | Oct. 14, 2011 USD ($)
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Coverage for pollution |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |
Provision for doubtful receivables |  |  |  |  |  |  |  |  | 0 | $ 215 | $ 0 |  |  |  |
Trade accounts receivable, net |  |  |  |  |  |  |  |  | 10,889 | 24,765 |  |  |  |  |
Other operational gain |  |  |  |  |  |  |  |  | $ 592 | $ 10,003 | 3,787 |  |  |  |
Korea Line Crporation ("KLC") |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Description of reverse stock split arrangement |  |  |  |  |  |  |  |  | 11,502 shares (46,007 shares before split) |  |  |  |  |  |
Settlement agreement with Ishhar |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for doubtful receivables |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,949 |  |
Settlement agreement date |  |  |  |  |  |  |  |  | September 5, 2012 |  |  |  |  |  |
Settlement agreement, amount |  |  |  | $ 5,000 |  |  |  |  |  |  |  |  |  |  |
Legal proceeds |  |  |  |  |  |  |  |  |  |  | 2,500 |  |  |  |
Number of installments |  |  |  | 17 |  |  |  |  |  |  |  |  |  |  |
Location in income statement |  |  |  |  |  |  |  |  | Other operational gain |  |  |  |  |  |
Other operational gain |  |  |  |  |  |  |  |  |  |  | 2,500 |  |  |  |
Settlement agreement with Ishhar | First installment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal proceeds |  |  |  | $ 500 |  |  |  |  |  |  |  |  |  |  |
Korea Line Corporation, Rehabilitation plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Provision for doubtful receivables |  |  |  |  |  |  |  |  |  |  |  |  | 498 |  |
Legal proceeds |  |  |  |  |  |  |  |  |  |  | 177 |  |  |  |
Trade accounts receivable, net |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,839
Collection period |  |  |  |  |  |  |  |  | 10 years |  |  |  |  |  |
Common Stock - Par Value | ₩ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | ₩ 5,000 |
Percentage of amount paid in cash |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 37.00%
Percentage of amount converted into shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 63.00%
Location in income statement |  |  |  |  |  |  |  |  | Other operational gain |  |  |  |  |  |
Proceeds from sale of trading securities |  |  |  |  |  |  |  | $ 144 | $ 550 |  |  |  |  |  |
Number of shares received | shares |  |  |  |  |  |  |  | 11,502 |  |  |  |  |  |  |
Other operational gain |  |  |  |  |  |  |  |  |  |  | $ 177 |  |  |  |
Star Gamma | Korea Line Corporation, Rehabilitation plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal proceeds | $ 172 |  |  |  | $ 167 | $ 172 |  |  |  |  |  | $ 12 | $ 86 |  |
Number of shares received | shares |  |  |  |  |  |  | 24,196 |  |  |  |  |  |  |  |
Star Cosmo | Korea Line Corporation, Rehabilitation plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Legal proceeds |  | $ 121 |  |  | $ 10 |  |  |  |  |  |  | $ 1 |  |  |
Number of shares received | shares |  |  | 718 |  |  |  | 983 |  |  |  |  |  |  |  |
Minimum | Settlement agreement with Ishhar | Last sixteen installments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount per installment |  |  |  | $ 250 |  |  |  |  |  |  |  |  |  |  |
Number of installments |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |
Maximum | Settlement agreement with Ishhar | Last sixteen installments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vessels [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount per installment |  |  |  | $ 500 |  |  |  |  |  |  |  |  |  |  |
Number of installments |  |  |  | 16 |  |  |  |  |  |  |  |  |  |  |

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