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Property, plant and equipment - Narrative (Details) - USD ($)		1 Months Ended	12 Months Ended
	Jun. 22, 2017	Jul. 31, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Depreciation			$ 829,684	$ 171,242	$ 140,649
Payments to Acquire Property, Plant, and Equipment			4,009,736	18,893,264	$ 934,495
Gross property, plant, and equipment			25,973,037	23,359,940
Construction in process
Property, Plant and Equipment [Line Items]
Gross property, plant, and equipment			6,091,265	$ 5,119,961
Atlantic Sea Smolt Plant
Property, Plant and Equipment [Line Items]
Payments to Acquire Property, Plant, and Equipment		$ 717,225
Rollo Bay Farm Site [Member] | Capital Addition Purchase Commitments
Property, Plant and Equipment [Line Items]
Long-term Purchase Commitment, Amount			785,000
Rollo Bay Farm Site [Member] | Construction in process
Property, Plant and Equipment [Line Items]
Gross property, plant, and equipment			5,700,000
Bell Fish Company, LLC Aquaculture Facility | Capital Addition Purchase Commitments
Property, Plant and Equipment [Line Items]
Long-term Purchase Commitment, Amount			122,000
Bell Fish Company, LLC Aquaculture Facility | Construction in process
Property, Plant and Equipment [Line Items]
Gross property, plant, and equipment			$ 2,600,000
Bell Fish Company, LLC Aquaculture Facility | Building
Property, Plant and Equipment [Line Items]
Payments to Acquire Property, Plant, and Equipment	$ 14,200,000

X

- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585

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- Definition

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+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

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-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
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- Definition

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.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.13)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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