Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)					1 Months Ended		2 Months Ended	3 Months Ended	6 Months Ended		12 Months Ended
	Apr. 21, 2021	Apr. 01, 2021	Mar. 01, 2021	Oct. 24, 2019	Jun. 30, 2021	Oct. 31, 2019	Feb. 28, 2021	Jun. 30, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Aug. 10, 2021	Apr. 04, 2019	Mar. 31, 2018
Cash and Cash Equivalents, at Carrying Value, Ending Balance					$ 44,881,034			$ 44,881,034	$ 44,881,034		$ 678,332
Long-term Debt, Total					0			0	0
Stock Issued During Period, Shares, New Issues (in shares)							22,531,864
Proceeds from Issuance or Sale of Equity, Total							$ 34,396,319
Proceeds from Issuance or Sale of Equity, Net of Stock Issuance Costs							$ 31,077,231		50,515,810	$ 5,057,919
Repayments of Debt									4,162,744	1,459,973
Accounts Receivable, Allowance for Credit Loss, Current					0			0	0
Goodwill, Impairment Loss											12,876,498
Accounts Receivable, after Allowance for Credit Loss, Total					196,520			196,520	196,520		256,878
Contract with Customer, Liability, Total					154,345			154,345	154,345		$ 53,028
Research and Development Expense, Total									143,322	$ 191,223
Income Tax Expense (Benefit), Total									0
Unrecognized Tax Benefits, Ending Balance					0			0	0
Cash, Uninsured Amount					$ 119,857			$ 119,857	$ 119,857
Common Stock, Shares Authorized (in shares)					100,000,000			100,000,000	100,000,000		100,000,000
Dr. Carl Schwartz [Member]
Stock Issued During Period, Shares, Issued for Services (in shares)		100,000
Dr. Carl Schwartz [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)		300,000
Stock Incentive Plan 2012 [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)					1,500,000			1,500,000	1,500,000
Amended and Restated 2012 Stock Incentive Plan [Member] | Board of Directors Chairman [Member]
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture (in shares)	5,000
Subsequent Event [Member]
Common Stock, Shares Authorized (in shares)												200,000,000
Subsequent Event [Member] | Stock Incentive Plan 2012 [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)												3,250,000
Licensing Agreements [Member]
Impairment of Intangible Assets (Excluding Goodwill), Total											$ 0
Debt Issued in September 2018, September, 2019, and February 2020 [Member]
Repayments of Debt			$ 5,906,802
June 2021 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					15,520,911			15,520,911	15,520,911
Equity Line Purchase Agreement [Member]
Issuance or Sale of Equity, Can Be Raised				$ 15,000,000
Sale of Stock, Remaining Available Balance					$ 9,200,829			$ 9,200,829	$ 9,200,829
Stock Issued During Period, Shares, New Issues (in shares)				104,651				572,504
Equity Line Purchase Agreement [Member] | Investor [Member]
Issuance or Sale of Equity, Can Be Raised						$ 15,000,000
Sale of Equity, Term (Year)						3 years
June 2021 Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)					15,520,911
Shares Issued, Price Per Share (in dollars per share)					$ 1.375			$ 1.375	$ 1.375
Proceeds from Issuance or Sale of Equity, Total					$ 21,341,253
Proceeds from Issuance or Sale of Equity, Net of Stock Issuance Costs					$ 19,446,296
Helomics Holding Corp. [Member]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage														25.00%
Business Acquisition, Percentage of Voting Interests Acquired													75.00%