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Risk Management and Fair Value Measurements - Schedule of Assets Measured at Fair Value on a Non-recurring Basis Long Lived Assets Held and Used and Held for Sale (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 USD ($)
Significant Other Observable Inputs (Level 2) Northsea Alpha [Member] |
Impaired Long-Lived Assets Held and Used [Line Items] |
Fair value of vessel | $ 6,125
Impairment Loss charged against Vessels, net | 1,142
Significant Other Observable Inputs (Level 2) Northsea Beta [Member] |
Impaired Long-Lived Assets Held and Used [Line Items] |
Fair value of vessel | 6,125
Impairment Loss charged against Vessels, net | 1,140
Significant Other Observable Inputs (Level 2) Northsea Alpha and Northsea Beta [Member] |
Impaired Long-Lived Assets Held and Used [Line Items] |
Fair value of vessel | 12,250
Impairment Loss charged against Vessels, net | $ 2,282

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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