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Description of Business (Details)	3 Months Ended	11 Months Ended	12 Months Ended
	Mar. 25, 2019	Nov. 15, 2018 Vessel	Dec. 31, 2018 USD ($) Vessel
Number of vessels Owned		19	38
Weighted average age, weighted by TEU capacity			11 years
Poseidon Transaction [Member]
Number of vessels purchased		20
Number of vessels Owned		19
All Subsidiaries [Member]
Ownership Interest			100.00%
Argos [Member] | Poseidon Transaction [Member]
Number of vessels to be sold		1
Reverse Stock Split [Member] | Common Shares [Member] | Subsequent Event [Member]
Shareholders' Equity, Reverse Stock Split	On March 25, 2019, the Company’s common shares began trading on a reverse-split-adjusted basis, following approval received from the Company’s shareholders at a Special Meeting held on March 20, 2019 and subsequently approval from the Company’s Board of Directors to reverse split the Company’s common shares at a ratio of one-for-eight.
Shareholders' Equity Note, Reverse Stock Split, Conversion Ratio	8
CMA CGM [Member]
Duration of agreement			5 years
Charter hire daily rate | $			$ 25,910

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The amount charged as daily charter hire.

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The term of the agreement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of vessels purchased by the company.

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The number of vessels that the company agreed to sell in the near future.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
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-Name Accounting Standards Codification
-Topic 505
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