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Property, Plant and Equipment (Narrative) (Details) - USD ($)
1 Months Ended 12 Months Ended
Mar. 31, 2020
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]        
Depreciation and amortization expense   $ 1,500,000 $ 1,300,000 $ 830,000
Proceeds from legal settlement, net $ 1,000,000.0 1,014,008    
Gross property, plant, and equipment   32,036,495 28,627,477  
Construction In Process [Member]        
Property, Plant and Equipment [Line Items]        
Gross property, plant, and equipment   3,212,287 $ 2,105,873  
Rollo Bay Farm Site [Member] | Capital Addition Purchase Commitments [Member]        
Property, Plant and Equipment [Line Items]        
Commitments to purchase property, plant, and equipment   258,000    
Rollo Bay Farm Site [Member] | Construction In Process [Member]        
Property, Plant and Equipment [Line Items]        
Gross property, plant, and equipment   1,900,000    
Indiana Aquaculture Farm [Member] | Capital Addition Purchase Commitments [Member]        
Property, Plant and Equipment [Line Items]        
Commitments to purchase property, plant, and equipment   1,100,000    
Indiana Aquaculture Farm [Member] | Construction In Process [Member]        
Property, Plant and Equipment [Line Items]        
Gross property, plant, and equipment   $ 407,000