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Note 5 - Notes Receivable (Details Textual) - USD ($)
1 Months Ended
Feb. 22, 2018
Oct. 31, 2018
Sep. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Nov. 30, 2017
Oct. 31, 2017
Feb. 21, 2018
Jan. 11, 2018
Jul. 31, 2017
Advance to Helomics [Member]                    
Notes Receivable, Interest Rate, Stated Percentage           8.00%        
Payments to Acquire Notes Receivable           $ 600,000 $ 600,000      
Advances to De Lage Landen [Member]                    
Payments to Acquire Notes Receivable     $ 60,000   $ 67,512.10          
Lease to Purchase Equipment, Down Payment, Percentage         50.00%          
Advances to De Lage Landen [Member] | Subsequent Event [Member]                    
Payments to Acquire Notes Receivable   $ 907,500                
CytoBioscience [Member] | Promissory Notes Receivable [Member]                    
Notes Receivable, Interest Rate, Stated Percentage       8.00%           8.00%
Financing Receivable, Net, Total       $ 1,112,524 $ 1,070,000          
Notes Receivable, Term       2 years            
CytoBioscience [Member] | Promissory Notes Receivable [Member] | Subsequent Event [Member]                    
Notes Receivable, Interest Rate, Stated Percentage       8.00%            
Financing Receivable, Net, Total       $ 1,112,524            
Notes Receivable, Term       2 years            
Helomics Holding Corp. [Member]                    
Financing Receivable, Net, Total     $ 163,468              
Share Exchange Agreement, Outstanding Receivables, Amount Converted       $ 500,000            
Share Exchange Agreement, Shares Received Upon Conversion of Receivables       833,333            
Share Exchange Agreement, Convertible Notes, Percent of Stock       5.00%            
Investment, Ownership Percent       25.00%            
Helomics Holding Corp. [Member] | Subsequent Event [Member]                    
Financing Receivable, Net, Total $ 167,512.50     $ 167,512.10       $ 667,512.50    
Share Exchange Agreement, Outstanding Receivables, Amount Converted $ 500,000     $ 500,000            
Share Exchange Agreement, Shares Received Upon Conversion of Receivables 833,333     833,333            
Share Exchange Agreement, Convertible Notes, Percent of Stock       5.00%         5.00%  
Investment, Ownership Percent 25.00%     25.00%