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Fixed Assets - Schedule of fixed assets (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Line Items]    
Owned vessels $ 580,517,259 $ 567,655,615
Accumulated depreciation and amortization (106,652,852) (97,943,561)
Vessels, vessel upgrades and capitalized dry docking, net 473,864,407 469,712,054
Accumulated depreciation (2,191,816) (2,315,932)
Other fixed assets, net 2,660,345 2,200,756
Total fixed assets, net 476,524,752 471,912,810
Advances for vessel purchases 0 1,990,000
Vessels and vessel upgrades    
Property, Plant and Equipment [Line Items]    
Owned vessels 565,107,408 554,241,221
Capitalized dry docking    
Property, Plant and Equipment [Line Items]    
Owned vessels 15,409,851 13,414,394
Land and building    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 2,541,085 2,541,085
Computers, equipment and internal use software    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 2,311,076 1,975,603
Other Fixed Assets    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 4,852,161 4,516,688
Other fixed assets, net $ 2,660,345 $ 2,200,756