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Property, plant and equipment - Additional Information (Details) - USD ($)		6 Months Ended
	Jun. 22, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Depreciation and amortization expense		$ 266,794	$ 84,717
Construction in process		25,370,594		$ 23,359,940
Purchase of land, buildings, and equipment		3,039,177	$ 16,193,926
Capital Additions | Rollo Bay farm site
Property, Plant and Equipment [Line Items]
Amount committed to renovations		1,100,000
Capital Additions | Bell Fish Company, LLC aquaculture facility
Property, Plant and Equipment [Line Items]
Amount committed to renovations		400,000
Construction in process
Property, Plant and Equipment [Line Items]
Construction in process		5,562,148		$ 5,119,961
Construction in process | Rollo Bay farm site
Property, Plant and Equipment [Line Items]
Construction in process		5,300,000
Construction in process | Bell Fish Company, LLC aquaculture facility
Property, Plant and Equipment [Line Items]
Construction in process		$ 1,900,000
Facility | Bell Fish Company, LLC aquaculture facility
Property, Plant and Equipment [Line Items]
Purchase of land, buildings, 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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-Section 45
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- Definition

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+ References

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- Definition

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+ References

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-Topic 230
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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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-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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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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