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Note 4 - Notes Receivable (Details Textual) - USD ($)
1 Months Ended
Feb. 22, 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     $ 67,512.10          
Lease to Purchase Equipment, Down Payment, Percentage     50.00%          
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   $ 167,512            
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%