Note 1 - Summary of Significant Accounting Policies (Details Textual)					1 Months Ended		2 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 01, 2021 USD ($)	Oct. 29, 2019	Oct. 28, 2019	Oct. 24, 2019 USD ($) shares	Feb. 23, 2021 USD ($) shares	Oct. 31, 2019 USD ($)	Feb. 28, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($) shares	Apr. 04, 2019	Jan. 01, 2019 USD ($)	Mar. 31, 2018
Retained Earnings (Accumulated Deficit), Ending Balance								$ (108,383,108)		$ (108,383,108)	$ (82,498,711)
Repayments of Debt										1,472,389	1,154,513
Operating Lease, Right-of-Use Asset								1,395,351		1,395,351	729,745
Operating Lease, Liability, Current								597,469		597,469	459,481
Accounts Receivable, Allowance for Credit Loss, Current								0		0	0
Impairment of Intangible Assets (Excluding Goodwill), Total										0	770,250
Goodwill, Impairment Loss								9,879,458	$ 2,997,000	12,876,498	8,100,000
Accounts Receivable, after Allowance for Credit Loss, Total								256,878		256,878	297,055
Contract with Customer, Liability, Total								53,028		53,028	40,384
Research and Development Expense, Total										372,710	422,964
Income Tax Expense (Benefit), Total										0
Unrecognized Tax Benefits, Ending Balance								0		0
Cash, Uninsured Amount								238,504		238,504
Licensing Agreements [Member]
Impairment of Intangible Assets (Excluding Goodwill), Total										$ 0	$ 770,250
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset													$ 353,007
Operating Lease, Liability, Current													$ 79,252
Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares					22,536,864
Proceeds from Issuance or Sale of Equity, Net of Stock Issuance Costs					$ 31,077,232		$ 31,077,232
Subsequent Event [Member] | Debt Issued in September 2018, September, 2019, and February 2020 [Member]
Repayments of Debt	$ 5,906,802
Equity Line Purchase Agreement [Member]
Issuance or Sale of Equity, Can Be Raised				$ 15,000,000
Stock Issued During Period, Shares, New Issues (in shares) | shares				104,651						4,231,073	122,356
Stock Issued During Period, Value, New Issues				$ 450,000						$ 4,891,348	$ 319,196
Sale of Stock, Remaining Available Balance								9,789,419		$ 9,789,419
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
Stock Issued During Period, Shares, New Issues (in shares) | shares										4,353,429
Stock Issued During Period, Value, New Issues										$ 5,210,581
Sale of Stock, Remaining Available Balance								$ 9,789,419		$ 9,789,419
Helomics Holding Corp. [Member]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage														25.00%
Business Acquisition, Percentage of Voting Interests Acquired												75.00%
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio		0.1	10