Fixed Assets - Schedule of fixed assets (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Owned vessels	$ 356,929,323	$ 348,563,194
Accumulated depreciation and amortization	(82,887,697)	(69,636,742)
Vessels, vessel upgrades and capitalized dry docking, net	274,041,626	278,926,452
Property, plant and equipment, gross	4,859,332	4,473,725
Accumulated depreciation	(2,159,207)	(1,925,320)
Other fixed assets, net	2,700,125	2,548,405
Total fixed assets, net	276,741,751	281,474,857
Vessels and vessel upgrades
Property, Plant and Equipment [Line Items]
Owned vessels	344,212,881	341,705,712
Capitalized dry docking
Property, Plant and Equipment [Line Items]
Owned vessels	12,716,442	6,857,482
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	$ 2,318,247	$ 1,932,640

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.

+ References

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

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