Fixed Assets (Details)	1 Months Ended	9 Months Ended
	Jan. 31, 2020 USD ($)	Sep. 30, 2020 USD ($) numberOfVessel barge	Dec. 31, 2019 USD ($)	Sep. 30, 2019 numberOfVessel
Property, Plant and Equipment [Line Items]
Number of dry bulk vessels owned | numberOfVessel		17
Number of dry bulk vessels financed under finance leases | numberOfVessel		3		4
Number of barges owned | barge		1
Vessels, net		$ 273,311,554	$ 278,926,452
Other fixed assets, net		2,305,018	2,548,405
Total fixed assets, net		275,616,572	281,474,857
Right of Use Assets		$ 45,732,947	53,615,305
NBHC
Property, Plant and Equipment [Line Items]
Ownership percentage		66.67%
Venture Barge
Property, Plant and Equipment [Line Items]
Ownership in property, plant, and equipment (in percent)		0.50
m/v BULK PANGAEA
Property, Plant and Equipment [Line Items]
Owned vessels		$ 13,974,199	14,988,076
m/v BULK NEWPORT
Property, Plant and Equipment [Line Items]
Owned vessels		12,218,098	12,975,767
m/v NORDIC ODYSSEY
Property, Plant and Equipment [Line Items]
Owned vessels		22,288,109	22,897,029
m/v NORDIC ORION
Property, Plant and Equipment [Line Items]
Owned vessels		23,038,349	23,688,812
m/v NORDIC OSHIMA
Property, Plant and Equipment [Line Items]
Owned vessels		27,305,645	28,325,078
m/v NORDIC ODIN
Property, Plant and Equipment [Line Items]
Owned vessels		27,742,774	28,094,764
m/v NORDIC OLYMPIC
Property, Plant and Equipment [Line Items]
Owned vessels		27,662,258	27,931,771
m/v NORDIC OASIS
Property, Plant and Equipment [Line Items]
Owned vessels		28,319,502	29,190,935
m/v BULK ENDURANCE
Property, Plant and Equipment [Line Items]
Owned vessels		24,277,889	25,037,775
m/v BULK FREEDOM
Property, Plant and Equipment [Line Items]
Owned vessels		9,627,193	8,269,777
m/v BULK PRIDE
Property, Plant and Equipment [Line Items]
Owned vessels		13,123,416	12,996,311
m/v BULK SPIRIT
Property, Plant and Equipment [Line Items]
Owned vessels		12,752,841	12,867,060
m/v BULK INDEPENDENCE
Property, Plant and Equipment [Line Items]
Owned vessels		13,965,032	14,000,946
m/v BULK FRIENDSHIP
Property, Plant and Equipment [Line Items]
Owned vessels		13,742,452	14,052,500
m/v BULK BEOTHUK
Property, Plant and Equipment [Line Items]
Right of Use Assets		0	6,589,537
Repayments lease obligation	$ 5,500,000
MISS NORA G PEARL
Property, Plant and Equipment [Line Items]
Owned vessels		3,273,797	3,609,851
m/v BULK DESTINY
Property, Plant and Equipment [Line Items]
Right of Use Assets		20,848,382	21,484,733
m/v BULK TRIDENT
Property, Plant and Equipment [Line Items]
Right of Use Assets		11,655,615	12,095,727
m/v BULK PODS
Property, Plant and Equipment [Line Items]
Right of Use Assets		$ 13,228,950	$ 13,445,308