Note 2 - Helomics Acquisition (Details Textual) - USD ($)		9 Months Ended
	Apr. 04, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Mar. 31, 2018
Stock Issued During Period, Value, Extinguishment of Debt		$ 6,463,309
Warrants Issued		47,078
Goodwill, Ending Balance		$ 23,790,290
Notes Issued to Helomics' Noteholders [Member]
Debt Instrument, Face Amount	$ 303,333
Debt Instrument, Term	90 years
Warrants Held by Noteholders [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	583,003
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1
Helomics Holding Corp. [Member]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage					25.00%
Business Acquisition, Percentage of Voting Interests Acquired	75.00%
Business Combination, Acquisition Related Costs	$ 656,615
Business Combination, Consideration Transferred, Total	26,711,791
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable	5,612,250
Business Combination, Notes and Interest Due Forgave	$ 2,210,381
Stock Issued During Period, Shares, Extinguishment of Debt	8,637,323
Stock Issued During Period, Value, Extinguishment of Debt	$ 6,463,309
Stock Issued During Period, Shares, Acquisitions	23,741,772
Warrants Issued	$ 6,261,591
Business Acquisition, Revaluation, Gain (Loss) on Acquisition	6,164,260
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	3,725,000
Goodwill, Ending Balance	23,790,290
Helomics Holding Corp. [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	398,000
Helomics Holding Corp. [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 445,000
Finite-Lived Intangible Asset, Useful Life	3 years
Helomics Holding Corp. [Member] | Developed Technology Rights [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total	$ 2,882,000
Finite-Lived Intangible Asset, Useful Life	20 years
Helomics Holding Corp. [Member] | Warrants Issued to Holders of Helomics Notes and Warrants [Member]
Class of Warrant or Right Issued During Period	14,245,063
Helomics Holding Corp. [Member] | Warrants Held by Other Parties [Member]
Class of Warrant or Right Issued During Period	597,000
Helomics Holding Corp. [Member] | Common Stock [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	4,000,000
Helomics Holding Corp. [Member] | Series D Convertible Preferred Stock [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	3,500,000