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Note 1 - Summary of Significant Accounting Policies (Details Textual)
1 Months Ended 3 Months Ended 12 Months Ended 193 Months Ended
Nov. 29, 2016
USD ($)
Aug. 31, 2015
USD ($)
Jan. 31, 2018
USD ($)
Mar. 31, 2018
USD ($)
$ / shares
shares
Mar. 31, 2017
USD ($)
Dec. 31, 2018
Dec. 31, 2017
USD ($)
$ / shares
shares
Mar. 31, 2018
USD ($)
$ / shares
shares
Feb. 21, 2018
$ / shares
Dec. 28, 2017
$ / shares
Dec. 31, 2016
USD ($)
Common Stock, Shares, Outstanding, Ending Balance | shares       11,804,073     6,943,283 11,804,073      
Common Stock, Par or Stated Value Per Share | $ / shares       $ 0.01     $ 0.01 $ 0.01 $ 0.01 $ 0.01  
Retained Earnings (Accumulated Deficit), Ending Balance       $ (56,525,066)     $ (54,765,045) $ (56,525,066)      
Cash and Cash Equivalents, at Carrying Value, Ending Balance       2,232,803 $ 2,086,408   766,189 2,232,803     $ 1,764,090
Stockholders' Equity, Period Increase (Decrease), Total               35,840,380      
Stock Issued During Period, Value, New Issues       2,755,087     $ 3,421,188        
Proceeds from Issuance or Sale of Equity, Total   $ 13,800,000                  
Debt Instrument, Increase (Decrease), Net, Total               $ 5,685,000      
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent             34.00%        
Advertising Expense       4,394 4,271            
Research and Development Expense, Total       94,011 84,472            
Depreciation, Total       14,496 15,685            
Amortization of Intangible Assets, Total       $ 3,671 $ 2,888            
Valuation Allowance Percentage       100.00%       100.00%      
Cash, Uninsured Amount       $ 1,984,163       $ 1,984,163      
Number of Operating Segments       2              
Non-US [Member]                      
Revenues, Total             $ 26,662        
Earliest Tax Year [Member]                      
Open Tax Year       2014              
Scenario, Forecast [Member]                      
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent           21.00%          
Private Placement [Member]                      
Stock Issued During Period, Value, New Issues             1,213,819        
IPO [Member]                      
Stock Issued During Period, Value, New Issues               13,555,003      
Proceeds from Issuance or Sale of Equity, Total               3,937,500      
The 2016 Registered Direct Offering [Member]                      
Proceeds from Issuance or Sale of Equity, Net of Stock Issuance Costs $ 1,739,770             1,739,770      
Proceeds from Issuance or Sale of Equity, Total $ 1,983,337                    
Over-Allotment Option [Member]                      
Stock Issued During Period, Value, New Issues       $ 204,422     $ 393,750        
Proceeds from Issuance or Sale of Equity, Total               358,312      
The 2018 Public Offering [Member]                      
Proceeds from Issuance or Sale of Equity, Total     $ 2,755,000         2,755,000      
Series A Convertible Preferred Stock [Member] | Private Placement [Member]                      
Stock Issued During Period, Value, New Issues               2,055,000      
Series C Convertible Preferred Stock [Member] | Private Placement [Member]                      
Stock Issued During Period, Value, New Issues               $ 1,300,000      
Helomics Holding Corp. [Member]                      
Share Exchange Agreement, Potential Interest       25.00%       25.00%