FIXED ASSETS - Schedule of fixed assets (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Vessels and vessel improvements property plant and equipment gross	$ 350,079,274	$ 363,104,833
Accumulated depreciation and amortization	(71,276,800)	(59,893,556)
Vessels, vessel upgrades and capitalized dry docking, net	278,802,474	303,211,277
Property, plant and equipment, gross	4,955,735	4,463,225
Accumulated depreciation	(1,866,524)	(1,381,847)
Other fixed assets, net	3,089,211	3,081,378
Total fixed assets, net	281,891,685	306,292,655
Vessels and vessel upgrades
Property, Plant and Equipment [Line Items]
Vessels and vessel improvements property plant and equipment gross	338,469,378	352,874,660
Capitalized dry docking
Property, Plant and Equipment [Line Items]
Vessels and vessel improvements property plant and equipment gross	11,609,896	10,230,173
Land and building
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,541,085	2,541,085
Internal use software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,414,650	$ 1,922,140

Amount of accumulated depreciation, depletion and amortization for vessels and capitalized dry docking.

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Amount before accumulated depreciation, depletion and amortization of vessels improvement and capitalized dry docking.

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Amount after accumulated depreciation, depletion and amortization of vessels and capitalized improvements.

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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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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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after depreciation of long-lived, physical assets used to produce goods and services and not intended for resale, classified as other.

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