Fixed Assets (Details)		1 Months Ended	3 Months Ended	6 Months Ended
	Jun. 29, 2020 USD ($)	Jan. 31, 2020 USD ($)	Jun. 30, 2020 USD ($) barge vessel	Jun. 30, 2020 USD ($) barge vessel	Dec. 31, 2019 USD ($) vessel
Property, Plant and Equipment [Line Items]
Number of dry bulk vessels owned | vessel			18	18
Number of dry bulk vessels financed under finance leases | vessel			3	3	4
Number of barges owned | barge			1	1
Vessels, net			$ 275,944,653	$ 275,944,653	$ 278,926,452
Other fixed assets, net			2,438,406	2,438,406	2,548,405
Total fixed assets, net			278,383,059	278,383,059	281,474,857
Right of Use Assets			$ 46,259,982	$ 46,259,982	53,615,305
NBHC
Property, Plant and Equipment [Line Items]
Ownership percentage			33.33333%	33.33333%
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			$ 14,312,159	$ 14,312,159	14,988,076
m/v BULK NEWPORT
Property, Plant and Equipment [Line Items]
Owned vessels			12,470,458	12,470,458	12,975,767
mv NORDIC ODYSSEY
Property, Plant and Equipment [Line Items]
Owned vessels			22,232,766	22,232,766	22,897,029
mv Nordic Orion
Property, Plant and Equipment [Line Items]
Owned vessels			23,100,663	23,100,663	23,688,812
mv NORDIC OSHIMA
Property, Plant and Equipment [Line Items]
Owned vessels			27,646,301	27,646,301	28,325,078
mv NORDIC OLYMPIC
Property, Plant and Equipment [Line Items]
Owned vessels			28,060,270	28,060,270	28,094,764
mv NORDIC ODIN
Property, Plant and Equipment [Line Items]
Owned vessels			27,983,056	27,983,056	27,931,771
mv Nordic Bulk Oasis
Property, Plant and Equipment [Line Items]
Owned vessels			28,609,980	28,609,980	29,190,935
m/v BULK ENDURANCE
Property, Plant and Equipment [Line Items]
Owned vessels			24,531,184	24,531,184	25,037,775
m/v BULK FREEDOM
Property, Plant and Equipment [Line Items]
Owned vessels			9,806,141	9,806,141	8,269,777
m/v BULK PRIDE
Property, Plant and Equipment [Line Items]
Owned vessels			13,028,499	13,028,499	12,996,311
m/v BULK SPIRIT
Property, Plant and Equipment [Line Items]
Owned vessels			12,896,925	12,896,925	12,867,060
m/v BULK INDEPENDENCE
Property, Plant and Equipment [Line Items]
Owned vessels			14,138,559	14,138,559	14,000,946
m/v BULK FRIENDSHIP
Property, Plant and Equipment [Line Items]
Owned vessels			13,741,877	13,741,877	14,052,500
m/v BULK BEOTHUK
Property, Plant and Equipment [Line Items]
Right of Use Assets			0	0	6,589,537
Repayments lease obligation		$ 5,500,000
Proceeds from sale of vessels	$ 4,600,000
Loss on impairment of vessels			1,800,000
MISS NORA G PEARL
Property, Plant and Equipment [Line Items]
Owned vessels			3,385,815	3,385,815	3,609,851
m/v BULK DESTINY
Property, Plant and Equipment [Line Items]
Right of Use Assets			21,060,499	21,060,499	21,484,733
m/v BULK TRIDENT
Property, Plant and Equipment [Line Items]
Right of Use Assets			11,802,319	11,802,319	12,095,727
m/v BULK PODS
Property, Plant and Equipment [Line Items]
Right of Use Assets			$ 13,397,164	$ 13,397,164	$ 13,445,308