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Summary of Significant Accounting Policies - Vessels and Depreciation (Details)	12 Months Ended
	Dec. 31, 2020 USD ($)
Property, Plant and Equipment [Line Items]
Vessels Salvage Value Per Lightweight Ton	$ 300
Vessels useful life	5 years
Vessels | Minimum
Property, Plant and Equipment [Line Items]
Vessels useful life	25 years
Vessels | Maximum
Property, Plant and Equipment [Line Items]
Vessels useful life	30 years
Current Fleet | Minimum
Property, Plant and Equipment [Line Items]
Vessels useful life	8 years
Current Fleet | Maximum
Property, Plant and Equipment [Line Items]
Vessels useful life	22 years

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- Definition

Vessels Salvage Value Per Lightweight Ton

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No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

+ Details

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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- Details

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- Details

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