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Long-term Debt - Information Per Loan 2 (Details) | 1 Months Ended | 2 Months Ended | 3 Months Ended | 4 Months Ended | 6 Months Ended | 7 Months Ended | 10 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 31, 2015 USD ($) | Jan. 21, 2015 USD ($) | Feb. 26, 2016 USD ($) | Feb. 28, 2015 USD ($) | Apr. 02, 2015 USD ($) | Apr. 30, 2015 USD ($) | Jul. 15, 2015 USD ($) | Jul. 11, 2014 | Jun. 30, 2014 USD ($) | Aug. 07, 2015 USD ($) | Jul. 22, 2015 USD ($) | Oct. 31, 2014 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2014 USD ($) | Dec. 30, 2014 USD ($) | Dec. 23, 2014 USD ($) | Aug. 19, 2014
Excel Vessels |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vessels acquired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 34
Deutsche Bank $85,000 Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  |  |  |  |  |  |  |  |  |  | May 20, 2014 |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 85,000,000 |  |  |  |
Repayment period |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 19 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Vessels provided as collateral |  |  |  |  |  |  |  |  |  |  |  |  | The Deutsche Bank $85,000 Facility is secured by first priority cross-collateralized ship mortgages on the Peloreus and Leviathan vessls |  |  |  |
Frequency of payments and payment terms |  |  |  |  |  |  |  |  |  |  |  |  | Each tranche is subject to 19 quarterly amortization payments equal to 1/60th of the tranche amount, with the 20th payment equal to the remaining amount outstanding on the tranche |  |  |  |
HSBC $86,600 Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  |  |  |  |  |  |  |  |  |  | Jun. 16, 2014 |  |  |  |
Amount drawn down |  |  |  |  |  |  |  |  | $ 86,600,000 |  |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 86,600,000 |  |  |  |
Expiration date |  |  |  |  |  |  |  |  |  |  |  |  | May 31, 2019 |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 20 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,555,000 |  |  |  |
Balloon installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 55,500,000 |  |  |  |
Vessels provided as collateral |  |  |  |  |  |  |  |  |  |  |  |  | The HSBC $86,600 Facility is secured by a first priority mortgage over the Kymopolia, Mercurial Virgo, Pendulum, Amami, Star Emily and Madredeus vessels |  |  |  |
NIBC $32,000 Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  |  |  |  |  |  |  |  |  |  | Nov. 07, 2014 |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 32,000,000 |  |  |  |
Expiration date |  |  |  |  |  |  |  |  |  |  |  |  | Nov. 30, 2020 |  |  |  |
Vessels provided as collateral |  |  |  |  |  |  |  |  |  |  |  |  | The NIBC $32,000 Facility is secured by a first priority cross collateralized mortgage over the Star Acquarius and Star Pisces vessels and general and specific assignments |  |  |  |
Number of loan tranches |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |
Number of vessels financed |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |
NIBC $32,000 Facility | Tranche A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount drawn down |  |  |  |  |  |  |  |  |  |  | $ 15,237,000 |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 16,000,000 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 255,000 |  |  |  |
Balloon installment |  |  |  |  |  |  |  |  |  |  |  |  | 9,633,000 |  |  |  |
NIBC $32,000 Facility | Tranche B |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount drawn down |  |  |  |  |  |  |  |  |  | $ 15,237,000 |  |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 16,000,000 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 255,000 |  |  |  |
Balloon installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,888,000 |  |  |  |
DVB $24,750 Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  |  |  |  |  |  |  |  |  |  | Oct. 30, 2014 |  |  |  |
Amount drawn down |  |  |  |  |  |  |  |  |  |  |  | $ 24,750,000 |  |  |  |  |
Expiration date |  |  |  |  |  |  |  |  |  |  |  |  | Oct. 31, 2020 |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 24 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Balloon installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,150,000 |  |  |  |
Vessels provided as collateral |  |  |  |  |  |  |  |  |  |  |  |  | The DVB $24,750 Facility is secured by a first priority pledge of the membership interests of the Christine Shipco LLC and general and specific assignments |  |  |  |
Number of vessels financed |  |  |  |  |  |  |  |  |  |  |  |  | 1 |  |  |  |
DVB $24,750 Facility | Christine Shipco LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of equity interest acquired |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |
DVB $24,750 Facility | First four installments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 900,000 |  |  |  |
DVB $24,750 Facility | Last twenty installments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 20 |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 450,000 |  |  |  |
Sinosure Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  |  |  |  |  |  |  |  |  |  | Feb. 11, 2015 |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 156,453,000 |  |  |  |
Repayment period |  |  |  |  |  |  |  |  |  |  |  |  | 12 years |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 48 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Vessels provided as collateral |  |  |  |  |  |  |  |  |  |  |  |  | The Sinosure Facility is secured by first priority cross collateralized mortgage over the Honey Badger (ex-HN NE 164), Wolverine (ex-HN NE 165), Star Antares (ex-HN NE 196), Star Lutas (ex-HN NE 197), Kennadi (ex-HN 1080) and Mackenzie (ex-HN 1081) vessels and general and specific assignments |  |  |  |
Number of loan tranches |  |  |  |  |  |  |  |  |  |  |  |  | 8 |  |  |  |
Number of vessels financed |  |  |  |  |  |  |  |  |  |  |  |  | 8 |  |  |  |
Citi Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 22, 2014 |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 100,000,000 |  |  |  |
Date of first required payment |  |  |  |  |  |  |  |  |  |  |  |  | Mar. 30, 2015 |  |  |  |
Expiration date |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 31, 2019 |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 20 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,388,000 |  |  |  |
Balloon installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 26,349,000 |  |  |  |
Vessels provided as collateral |  |  |  |  |  |  |  |  |  |  |  |  | The Citi Facility is secured by a first priority mortgage over the Star Pauline, Star Angie, Star Sophia, Star Georgia, Star Kamila and Star Nina vessels and general and specific assignments |  |  |  |
Number of vessels financed |  |  |  |  |  |  |  |  |  |  |  |  | 7 |  |  |  |
Citi Facility | Tranche A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount drawn down |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 51,477,500 |
Citi Facility | Tranche B |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount drawn down |  | $ 42,627,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Heron Vessels Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  |  |  |  |  |  |  |  |  |  | Nov. 30, 2014 |  |  |  |
Amount drawn down |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,311,000 |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,311,000 |  |  |  |
Date of first required payment |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 31, 2014 |  |  |  |
Expiration date |  |  |  |  |  |  |  |  |  |  |  |  | Jun. 30, 2019 |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 19 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 744,400 |  |  |  |
Vessels provided as collateral |  |  |  |  |  |  |  |  |  |  |  |  | The facility is secured by a first priority mortgage over the Star Gwyneth and Star Angelina vessels and general and specific assignments |  |  |  |
Number of vessels financed |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |
DNB $120,000 Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 29, 2014 |  |  |  |
Amount drawn down | $ 9,515,000 |  |  | $ 9,507,000 |  | $ 7,769,000 |  |  |  |  |  |  |  |  | $ 88,275,000 |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 120,000,000 |  |  |  |
Date of first required payment |  |  |  |  |  |  |  |  |  |  |  |  | Mar. 31, 2015 |  |  |  |
Expiration date |  |  |  |  |  |  |  |  |  |  |  |  | Dec. 31, 2019 |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 20 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,374,000 |  |  |  |
Balloon installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 29,160,000 |  |  |  |
Vessels provided as collateral |  |  |  |  |  |  |  |  |  |  |  |  | The DNB $120,000 Facility is secured by a first priority mortgage over the Star Nasia, Star Eleonora, Star Danai, Star Renee, Star Markella, Star Laura, Star Moira, Star Jennifer, Star Mariella, Star Helena and Star Maria vessels and general and specific assignments |  |  |  |
Number of vessels financed |  |  |  |  |  |  |  |  |  |  |  |  | 12 |  |  |  |
DNB-SEB-CEXIM $227,500 Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Initiation Date |  |  |  |  |  |  |  |  |  |  |  |  | Mar. 31, 2015 |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  | $ 227,500,000 |  |  |  |
Number of installments |  |  |  |  |  |  |  |  |  |  |  |  | 24 |  |  |  |
Frequency of payments |  |  |  |  |  |  |  |  |  |  |  |  | quarterly |  |  |  |
Vessels provided as collateral |  |  |  |  |  |  |  |  |  |  |  |  | The DNB-SEB-CEXIM $227,500 Facility is secured by a first priority cross-collateralized mortgage over the Gargantua (ex-HN166), Goliath (ex-HN167), Maharaj (ex-HN184) and Star Poseidon (ex-HN198) vessels and general and specific assignments |  |  |  |
Number of loan tranches |  |  |  |  |  |  |  |  |  |  |  |  | 6 |  |  |  |
Number of vessels financed |  |  |  |  |  |  |  |  |  |  |  |  | 6 |  |  |  |
DNB-SEB-CEXIM $227,500 Facility | Tranche A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount drawn down |  |  |  |  | $ 32,400,000 |  |  |  |  |  |  |  |  |  |  |  |
DNB-SEB-CEXIM $227,500 Facility | Tranche B |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount drawn down |  |  |  |  |  |  | $ 30,300,000 |  |  |  |  |  |  |  |  |  |
DNB-SEB-CEXIM $227,500 Facility | Tranche C |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount drawn down |  |  |  |  |  |  | $ 30,300,000 |  |  |  |  |  |  |  |  |  |
DNB-SEB-CEXIM $227,500 Facility | Tranche D |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount drawn down |  |  | $ 23,400,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
DNB-SEB-CEXIM $227,500 Facility | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 367,000 |  |  |  |
Balloon installment |  |  |  |  |  |  |  |  |  |  |  |  | 14,587,000 |  |  |  |
DNB-SEB-CEXIM $227,500 Facility | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment installment |  |  |  |  |  |  |  |  |  |  |  |  | 508,000 |  |  |  |
Balloon installment |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,198,000 |  |  |  |

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