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v3.19.1

Vessels in Operation (Details) $ in Thousands | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 18, 2018 USD ($) | Dec. 31, 2018 USD ($) Vessel | Dec. 31, 2017 USD ($) Vessel | Dec. 31, 2016 USD ($) Vessel | Nov. 15, 2018 Vessel
Property, Plant and Equipment [Line Items] |  |  |  |  |
Vessel acquisition cost | $ |  | $ 11,675 |  |  |
Number of vessels on which impairment charge is recognized |  | 3 | 5 | 6 |
Vessel impairment charges | $ |  | $ 71,834 | $ 87,624 | $ 92,422 |
Poseidon Transaction [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Number of vessels purchased |  |  |  |  | 20
GSL Valerie [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Vessel delivery date |  | Jun. 18, 2018 |  |  |
Year built |  | 2005 |  |  |
Capacity in TEUs |  | 2,824 |  |  |
Vessel acquisition cost | $ | $ 11,436 |  |  |  |
Argos [Member] | Poseidon Transaction [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Number of vessels to be sold |  |  |  |  | 1
Hayfin Credit Facility [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Number of vessels pledged as collateral |  | 1 |  |  |
Loan Facilities of Poseidon Fleet [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Number of vessels pledged as collateral |  | 19 |  |  |
2022 Notes [Member] | Citi Super Senior Term Loan [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Number of vessels pledged as collateral |  | 18 |  |  |

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