Note 4 - Stockholders' Equity (Deficit), Stock Options and Warrants (Details Textual)											1 Months Ended		3 Months Ended		12 Months Ended
	Oct. 26, 2018 USD ($) $ / shares shares	Jul. 11, 2018 $ / shares shares	Jul. 10, 2018 $ / shares shares	Mar. 12, 2018 $ / shares shares	Feb. 21, 2018 USD ($) $ / shares shares	Jan. 15, 2018 $ / shares shares	Jan. 11, 2018 USD ($) shares	Nov. 30, 2017 USD ($) $ / shares shares	Apr. 19, 2017 $ / shares shares	Jan. 19, 2017 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Jan. 31, 2018 USD ($) $ / shares shares	Mar. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Mar. 22, 2019 $ / shares shares	Jan. 02, 2018 shares	Dec. 28, 2017 $ / shares shares	Jan. 29, 2017 shares	Oct. 27, 2016 shares
Shares Issued, Price Per Share | $ / shares		$ 1.17	$ 1.18
Proceeds from Issuance of Convertible Preferred Stock | $																$ 1,300,001
Common Stock, Par or Stated Value Per Share | $ / shares		$ 0.01	$ 0.01		$ 0.01				$ 0.01		$ 0.01			$ 0.01	$ 0.01	$ 0.01			$ 0.01
Stock Issued During Period, Shares, Issued for Services			250,000
Stock Issued During Period, Share, Issued in Escrow		750,000
Common Stock, Shares Authorized											50,000,000			50,000,000	50,000,000	50,000,000			50,000,000	24,000,000	8,000,000
Reverse Shares Issued for Escrow Pursuant to Termination of Agreement, Shares									400,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate															0.00%	0.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number											2,946,488				2,946,488
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price | $ / shares											$ 1.79				$ 1.79
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term															8 years 313 days
Class of Warrant or Right Number of Warrants Vested and Exercisable											2,247,489				2,247,489
Allocated Share-based Compensation Expense, Total | $															$ 1,124,928	$ 2,298,680
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options | $											$ 741,922				$ 741,922
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost | $														$ 1,900,000
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares															$ 1.01	$ 1.45
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross															1,098,858	2,612,070
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition															1 year 240 days
Vice President of Sales [Member]
Common Stock, Par or Stated Value Per Share | $ / shares						$ 0.01
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross						50,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares						$ 0.97
Number of Equal Installments Options are Expected to Vest						4
Vice President of Sales and Marketing [Member]
Common Stock, Par or Stated Value Per Share | $ / shares				$ 0.01
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross				111,112
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ / shares				$ 1.35
Number of Equal Installments Options are Expected to Vest				4
Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares											$ 609.38				$ 609.38
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate															3.07%	2.40%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate															66.00%	66.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term															10 years	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares															$ 1.0044	$ 1.5489
Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares											$ 0				$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate															2.33%	1.92%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate															59.00%	59.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term															5 years	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ / shares															$ 0.3816	$ 0.6541
Equity Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period															3 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period															10 years
Equity Incentive Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period															3 years
Stock Incentive Plan 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross																2,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized																		5,000,000
Subsequent Event [Member]
Common Stock, Par or Stated Value Per Share | $ / shares																	$ 0.01
Common Stock, Shares Authorized																	100,000,000
Helomics Holding Corp. [Member]
Notes Payable, Total | $	$ 7,600,000
Helomics Holding Corp. [Member]
Convertible Preferred Stock Held, Conversion Feature, Percent	20.00%
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Held in Escrow	860,000
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares Held in Escrow, Period	1 year 180 days
Percentage of Holders of Acquiree's Promissory Note Agreeing to Merger	75.00%
Business Acquisition, Warrant Exchange Ratio	0.6
Helomics Holding Corp. [Member] | Common Stock [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	7,500,000												1,100,000
Helomics Holding Corp. [Member]
Stock Issued During Period, Shares, New Issues							1,100,000
Share Exchange Agreement, Shares Received							2,500,000
Share Exchange Agreement, Convertible Notes Receivable | $													$ 500,000
Share Exchange Agreement, Convertible Notes, Percent of Stock													5.00%
Share Exchange Agreement, Potential Interest													25.00%
Share Exchange Agreement, Number of Shares Held in Escrow													1,100,000
Share Exchange Agreement, Contingent Revenue, Minimum | $							$ 8,000,000
Convertible Preferred Stock Held, Conversion Feature, Percent							20.00%
Conversion from Series C Convertible Preferred Stock to Common Stock [Member]
Convertible Preferred Stock, Shares Issued upon Conversion											1.167				1.167
Conversion of Stock, Shares Issued											1,250,269
Series C Convertible Preferred Stock [Member]
Stock Redeemed or Called During Period, Shares											142,466
Payments for Repurchase of Convertible Preferred Stock | $											$ 189,285
Helomics Warrants Held by Investors [Member] | Helomics Holding Corp. [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 1
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	18,700,000
Helomics Warrants Held by Investors [Member] | Helomics Holding Corp. [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 1
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	5,000,000
Precision Warrants [Member] | Helomics Holding Corp. [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 1
Business Acquisition, Warrant Issued or Issuable, Exercise Price | $ / shares	$ 1
Business Acquisition, Equity Interest Issued or Issuable from Exchange of Warrants	23,700,000
Class of Warrant or Right, Additional Number of Securities Called by Warrants or Rights	14,200,000
Helomics Warrants Held by Other Parties [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 0.01
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	597,000
Helomics Warrants Held by Other Parties [Member] | Helomics Holding Corp. [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 0.01
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	995,000
The 2017 Public Offering [Member]
Stock Issued During Period, Shares, New Issues										1,750,000
Shares Issued, Price Per Share | $ / shares										$ 2.25
Share Per Each Unit										1
Proceeds from Issuance or Sale of Equity, Total | $										$ 3,937,500
The 2017 Public Offering [Member] | Series D Warrants [Member]
Class of Warrant or Right, Issued per Unit										0.2
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right										1
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares										$ 2.25
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues					215,247					175,000
Shares Issued, Price Per Share | $ / shares					$ 0.9497
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares										$ 0.01
Proceeds from Issuance or Sale of Equity, Total | $										$ 358,312
Class of Warrant or Right, Number of Securities Called by Warrants or Rights										35,000
Sale of Stock, Underwriter Option Term												45 days
Sale of Stock, Underwriter Option, Maximum Additional Shares of Common Stock Available for Purchase												290,000
Sale of Stock, Underwriter Option, Number of Securities Called by Maximum Additional Warrants Available for Purchase												87,000
Sale of Stock, Underwriter Option, Exercise Price of Additional Warrants Available for Purchase | $ / shares												$ 0.001
Proceeds from Underwriter Shares Exercised, Net | $					$ 188,066
Stock Issued During Period, Underwriter Discount | $					$ 16,354
Underwriter Discount Percentage					8.00%
Private Placement [Member]
Proceeds from Issuance of Convertible Preferred Stock | $								$ 1,300,000
Private Placement [Member] | Series C Convertible Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues								1,213,819
Shares Issued, Price Per Share | $ / shares								$ 1.071
Private Placement [Member] | The 2017 Private Placement Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares								$ 1.26
Class of Warrant or Right, Number of Securities Called by Warrants or Rights								606,910
Warrants and Rights Outstanding, Term								5 years 182 days
Class of Warrant or Right, Vesting Period								180 days
The 2018 Public Offering [Member]
Stock Issued During Period, Shares, New Issues												2,900,000
Share Per Each Unit												1
Proceeds from Issuance or Sale of Equity, Total | $												$ 2,755,000
Share Price | $ / shares												$ 0.95
The 2018 Public Offering [Member] | Series E Warrants [Member]
Class of Warrant or Right, Issued per Unit												0.3
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right												1
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares												$ 1