Number of vessels which consists the operating fleet of the entity.

No definition available.

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- Definition

The purchase price of a vessel pursuant to an agreement.

+ References

No definition available.

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585

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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.

+ References

No definition available.

+ Details

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Vessels - Additional Information (Details)			3 Months Ended			6 Months Ended
Vessels - Additional Information (Details)	Mar. 23, 2018 USD ($)	Aug. 30, 2017 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($) vessel	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) vessel	Jun. 30, 2017 USD ($)	Jul. 20, 2018 USD ($)	Dec. 19, 2017 USD ($)
Property, Plant and Equipment [Line Items]
Number of vessels \| vessel				47		47
Proceeds from sale of vessels						$ 9,719,013	$ 10,586,500
Gain on sale of vessels				$ 105,073	$ 1,805,785	$ 105,073	$ 1,897,899
SDARI-64 Ultramax Dry Bulk Vessel
Property, Plant and Equipment [Line Items]
Vessel purchase price									$ 21,300,000
Vessel Avocet
Property, Plant and Equipment [Line Items]
Proceeds from sale of vessels		$ 9,600,000
Gain on sale of vessels		$ 100,000
Vessel Thrush
Property, Plant and Equipment [Line Items]
Proceeds from sale of vessels	$ 10,900,000
Forecast \| Vessel Thrush
Property, Plant and Equipment [Line Items]
Gain on sale of vessels			$ 400,000
Subsequent Event \| Ultramax Vessels
Property, Plant and Equipment [Line Items]
Vessel purchase price								$ 21,300,000