Note N - Equity (Details Textual) - USD ($)														1 Months Ended					2 Months Ended	8 Months Ended	12 Months Ended
	Aug. 24, 2018	Aug. 22, 2018	May 31, 2018	May 23, 2018	Apr. 03, 2018	Mar. 23, 2018	Oct. 17, 2017	Sep. 22, 2017	Aug. 07, 2017	Nov. 11, 2015	Oct. 29, 2015	Sep. 23, 2015	Nov. 13, 2014	May 31, 2018	Apr. 30, 2018	Mar. 31, 2018	Oct. 31, 2017	Sep. 30, 2017	May 23, 2018	May 31, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015	Sep. 30, 2018
Preferred Stock, Shares Authorized																					5,000,000
Preferred Stock, Par or Stated Value Per Share																					$ 0.0001
Stock Issued During Period, Shares, New Issues									90,000
Share Price																					$ 0.75
Maximum Ownership as a Result of Conversion							35.00%		9.99%
Conversion of Dividends Payable, Shares Issued								150,000
Stock Issued During Period, Shares, Conversion of Convertible Securities						1,794,190
Class of Warrant or Right, Exercise Price of Warrants or Rights										$ 3.60
Payments of Stock Issuance Costs																					$ 143,945	$ 80,366
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures, Total																						1,610
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures, Total																					$ 37,532	$ 32,030
Stock Issued During Period, Value, Issued for Services																						$ 354,585
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period																					0	4,167
Promissory Note [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights												69,445
Consultancy Firms [Member]
Stock Issued During Period, Shares, Issued for Services																						117,849
Stock Issued During Period, Value, Issued for Services																						$ 354,585
Common Stock [Member]
Stock Issued During Period, Shares, New Issues																					1,380,000	555,556
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures, Total																					20,976	11,244
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures, Total																					$ 2	$ 1
Stock Issued During Period, Shares, Issued for Services																						117,849
Stock Issued During Period, Value, Issued for Services																						$ 12
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period																						1,610
Director [Member]
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures, Total																						11,244
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures, Total																					$ 37,532	$ 32,030
Director [Member] | Common Stock [Member]
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures, Total																					20,976
Securities Purchase Agreement Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.50
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	2,392,502
Fair Value Adjustment of Warrants	$ 1,288,139
September 2015 Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.50
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	166,668
Fair Value Adjustment of Warrants	$ 140,827
Public Offering [Member]
Stock Issued During Period, Shares, New Issues	1,380,000
Units Issued During Period, Units, New Issues		1,200,000
Number of Common Shares Called, Per Unit		1
Shares Issued, Price Per Share		$ 1.50
Proceeds from Issuance or Sale of Equity, Total	$ 2,070,000
Payments for Commissions, Percent	7.00%
Payments for Commissions	$ 144,900
Payments for Underwriting Expenses for Issuance or Sale of Equity	50,000
Proceeds from Issuance or Sale of Equity, Net, Total	$ 1,875,100
Public Offering [Member] | August 2018 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right		0.75
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 1.50
Warrants and Rights Outstanding, Term		5 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	1,035,000
Over-Allotment Option [Member]
Stock Issued During Period, Shares, New Issues		180,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		135,000
Private Investor SPA [Member]
Stock Issued During Period, Shares, New Issues													664,584
Class of Warrant or Right, Exercise Price of Warrants or Rights													$ 3.60
Class of Warrant or Right, Number of Securities Called by Warrants or Rights													996,877
Proceeds from Issuance of Private Placement													$ 1,595,000
Term Of Warrant													5 years
Conversion of Series A-1 Shares into Common Stock [Member]
Conversion of Stock, Shares Issued							761,222													2,500,000
Conversion of Dividends Payable on Series A-1 Preferred Stock to Common Stock [Member]
Conversion of Dividends Payable, Shares Issued																				248,893
Conversion of Dividends Payable, Amount Converted			$ 25,463		$ 330,552															$ 896,015	$ 356,015	540,000
Stock Issued During Period, Shares, Conversion of Convertible Securities			660,073		1,177,598
Conversion of Series B-1 Shares into Common Stock [Member]
Conversion of Stock, Shares Issued																			2,916,668
Conversion of Dividends Payable on Series B-1 Preferred Stock to Common Stock [Member]
Conversion of Dividends Payable, Shares Issued						131,229
Conversion of Dividends Payable, Amount Converted																			$ 472,426		$ 472,426
Stock Issued During Period, Shares, Conversion of Convertible Securities				1,253,707
Series A-1 Convertible Preferred Stock [Member]
Preferred Stock, Shares Authorized																					100,000	100,000
Preferred Stock, Par or Stated Value Per Share																					$ 0.0001	$ 0.0001
Stock Issued During Period, Shares, New Issues										5,500	84,500												90,000
Preferred Stock, Shares Outstanding, Ending Balance																					0	62,596
Share Price										$ 100	$ 100
Proceeds from Issuance of Convertible Preferred Stock										$ 550,000	$ 8,450,000
Initial Conversion Price										$ 3.60
Conversion Cap									35.00%
Preferred Stock, Dividend Rate, Percentage									6.00%
Period Preceding the Dividend Payment Date									10 days
Liquidation Value Per Share										$ 100
Conversion of Dividends Payable, Amount Converted														$ 25,463	$ 330,552			$ 540,000
Preferred Stock, Shares Issued, Total																					0	62,596
Series A-1 Convertible Preferred Stock [Member] | Maximum [Member]
Maximum Ownership as a Result of Conversion										9.99%
Series B-1 Convertible Preferred Stock [Member]
Preferred Stock, Shares Authorized																					105,000	105,000
Preferred Stock, Par or Stated Value Per Share																					$ 0.0001	$ 0.0001
Stock Issued During Period, Shares, New Issues										105,000													105,000
Preferred Stock, Shares Outstanding, Ending Balance																					0	105,000
Share Price										$ 100
Proceeds from Issuance of Convertible Preferred Stock										$ 10,500,000
Initial Conversion Price										$ 3.60
Preferred Stock, Dividend Rate, Percentage										2.50%
Period Preceding the Dividend Payment Date										10 days
Liquidation Value Per Share										$ 100
Conversion of Dividends Payable, Amount Converted														$ 55,342		$ 417,084
Equity Facility, Aggregate Sales Limitation, Percentage of Total Outstanding Share										19.99%
Preferred Stock, Shares Issued, Total																					0	105,000		0
Series B-1 Convertible Preferred Stock [Member] | Maximum [Member]
Maximum Ownership as a Result of Conversion										9.99%
September 2015 Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights												$ 3.60
Term Of Warrant												5 years