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v3.19.1

Vessels and Other Fixed Assets, Net - Bareboat Leases (Details) $ in Thousands | 9 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2018 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 27, 2018 USD ($) | Jul. 06, 2018 USD ($) | May 02, 2018 USD ($) | Dec. 13, 2017 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Interest and finance costs |  |  | $ 26,875 | $ 12,590 | $ 7,477 |  |  |  |
Capital leased assets, Net book value |  |  | 992,777 | 325,301 |  |  |  |  |
Accumulated amortization |  |  | $ 51,956 | $ 21,264 |  |  |  |  |
Star Eleni |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Delivery Date | [1] |  | January 3, 2018 |  |  |  |  |  |
Star Leo |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Delivery Date | [1] |  | May 14, 2018 |  |  |  |  |  |
Songa Vessels |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Number of vessels acquired |  |  |  |  |  |  | 15 |  |
Star Fighter |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Delivery Date | [1] |  | December 30, 2013 |  |  |  |  |  |
New Yangzijiang |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Description of Capital leases, Term of contract |  |  | Bareboat charter for eight years |  |  |  |  |  |
Capital leased assets, Number of vessels |  |  | 4 |  |  |  |  |  |
Vessel purchase price obligation |  |  | $ 6,000 |  |  |  |  |  |
CSSC | Star Marisa, Libra, Virgo, Ariadne and Magnanimus |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Description of Capital leases, Term of contract |  |  | Bareboat charter for ten years |  |  |  |  |  |
Capital leased assets, Number of vessels |  |  | 5 |  |  |  |  |  |
CSSC | Star Eleni |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Description of Capital leases, Term of contract |  |  | Bareboat charter for ten years |  |  |  |  |  |
Vessel purchase price obligation |  |  | $ 9,000 |  |  |  |  |  |
Repayments of Capital lease obligations |  | $ 28,744 |  |  |  |  |  |  |
Capital lease obligation recognised |  |  |  |  |  |  |  |  | $ 30,000
CSSC | Star Leo |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Description of Capital leases, Term of contract |  |  | Bareboat charter for ten years |  |  |  |  |  |
Vessel purchase price obligation |  |  | $ 9,000 |  |  |  |  |  |
Repayments of Capital lease obligations |  | $ 29,368 |  |  |  |  |  |  |
Capital lease obligation recognised |  |  |  |  |  |  |  | $ 30,000 |
CSSC | ABOY Sienna, ABOY Laetitia and ABOY Karlie |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Capital leased assets, Number of vessels |  |  | 3 |  |  |  |  |  |
CMBL | Star Eleni |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Description of Capital leases, Term of contract |  |  | Bareboat charter for five years |  |  |  |  |  |
Vessel purchase price obligation |  |  | $ 18,231 |  |  |  |  |  |
CMBL | Star Leo |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Description of Capital leases, Term of contract |  |  | Bareboat charter for five years |  |  |  |  |  |
Vessel purchase price obligation |  |  | $ 20,000 |  |  |  |  |  |
CMBL | Songa Vessels |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Description of Capital leases, Term of contract |  |  | Bareboat charter for five years |  |  |  |  |  |
Capital lease obligation recognised |  |  |  |  |  |  | $ 180,000 |  |
Sale leaseback transaction, Remaining borrowing capacity |  |  |  |  |  |  | $ 19,600 |  |
CMBL | Star Eleni and Star Leo |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Capital lease obligation recognised |  |  |  |  |  | $ 57,346 |  |  |
Kyowa Sansho | Star Fighter |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Description of Capital leases, Term of contract |  |  | Bareboat charter for ten years |  |  |  |  |  |
Vessel purchase price obligation |  |  | $ 2,450 |  |  |  |  |  |
Minimum | CSSC | Star Marisa, Libra, Virgo, Ariadne and Magnanimus |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Vessel purchase price obligation |  |  | 11,990 |  |  |  |  |  |
Minimum | CSSC | ABOY Sienna, ABOY Laetitia and ABOY Karlie |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Vessel purchase price obligation |  |  | 12,000 |  |  |  |  |  |
Minimum | CMBL | Songa Vessels |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Vessel purchase price obligation |  |  | 2,200 |  |  |  |  |  |
Maximum | CSSC | Star Marisa, Libra, Virgo, Ariadne and Magnanimus |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Vessel purchase price obligation |  |  | 12,960 |  |  |  |  |  |
Maximum | CSSC | ABOY Sienna, ABOY Laetitia and ABOY Karlie |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Vessel purchase price obligation |  |  | 12,960 |  |  |  |  |  |
Maximum | CMBL | Songa Vessels |  |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |
Vessel purchase price obligation |  |  | $ 8,400 |  |  |  |  |  |
[1] | Subject to a bareboat charter with purchase obligation at the expiration of the bareboat term (Note 5)

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