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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 |  |  |  |

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- 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 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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