Note 4 - Debt Obligations (Details Textual)												1 Months Ended		3 Months Ended			9 Months Ended
	Sep. 19, 2018 USD ($)	Sep. 12, 2018 USD ($)	Sep. 01, 2018 USD ($) $ / shares shares	Aug. 07, 2018 USD ($)	Jul. 15, 2018 USD ($) $ / shares shares	Jul. 02, 2018 USD ($) $ / shares shares	Jun. 15, 2018 USD ($) $ / shares	Mar. 01, 2018 USD ($) $ / shares shares	Feb. 08, 2018 USD ($) $ / shares shares	Jan. 16, 2018 USD ($) $ / shares shares	Dec. 18, 2017 USD ($) $ / shares shares	Sep. 30, 2018 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) shares	Sep. 30, 2018 USD ($) $ / shares shares	Mar. 31, 2018 USD ($) $ / shares shares	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) $ / shares shares	Sep. 30, 2017 USD ($)	Sep. 14, 2018 $ / shares	Dec. 31, 2017 $ / shares
Shares Issued, Price Per Share | $ / shares												$ 0.25		$ 0.25			$ 0.25
Share Price | $ / shares									$ 0.3147		$ 0.41
Gain (Loss) on Extinguishment of Debt, Total														$ (578,312)			$ (578,312)
Proceeds from Lines of Credit, Total																	$ 430,000	$ 250,000
Vista Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares												1,812,000		1,812,000			1,812,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares												$ 0.25		$ 0.25			$ 0.25
Warrants and Rights Outstanding		$ 488,344
Stock Purchase Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares												1,387,500		1,387,500			1,387,500
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares												$ 0.25		$ 0.25			$ 0.25
Class Of Warrant Or Right, Call Feature, Stock Price Trigger | $ / shares												2.50		2.50			$ 2.50
Class Of Warrant Or Right, Threshold Consecutive Trading Days																	10
Class of Warrant or Right, Call Feature, Exercise Period																	30 days
Warrants Issued Concurrently to the Spring 2018 Unit Offering [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares			$ 0.30									$ 0.25		$ 0.25			$ 0.25
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares			333,333									400,000		400,000	333,333		400,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.48									$ 0.40		$ 0.40	$ 0.48		$ 0.40		$ 0.25
Vista Note [Member]
Debt Conversion, Original Debt, Amount													$ 52,025
Debt Conversion, Converted Instrument, Shares Issued | shares													208,100
Note Payable, Maturing January 5, 2019 [Member]
Debt Instrument, Interest Rate, Stated Percentage	12.00%
Proceeds from Notes Payable, Total	$ 400,000
Debt Instrument Extension Option Increase In Principal Percentage	10.00%
Debt Instrument, Extension Option	60 days
Line of Credit, Maturing September 1, 2019 [Member]
Proceeds from Lines of Credit, Total			$ 40,000					$ 390,000
Line of Credit Facility, Interest Rate During Period								18.00%
Number of Trading Days Prior to Interest Payment Due Date if Paid by Issuance of Common Stock								20 days
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period								10 years
Debt Instrument, Call Notice Period								30 days
Convertible Notes, Maturing April 20, 2021 [Member]
Debt Instrument, Interest Rate, Stated Percentage								12.00%
Debt Instrument, Convertible, Conversion Price | $ / shares								$ 0.30
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares															333,333
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares								$ 0.48
Number of Trading Days Prior to Interest Payment Due Date if Paid by Issuance of Common Stock								20 days
Proceeds from Issuance of Private Placement								$ 1,500,000
Debt Conversion before Maturity, Number of Trading Days Common Stock Closes at or above 3 Times the Unit Price								10 days
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right | shares								1
Proceeds from Issuance of Units															$ 100,000
OID Note [Member]
Debt Instrument, Face Amount							$ 110,000
Debt Instrument, Interest Rate, Stated Percentage							15.00%
Debt Instrument, Convertible, Conversion Price | $ / shares							$ 0.30
Proceeds from Convertible Debt				$ 25,000			$ 75,000
Debt Instrument, Unamortized Discount, Total							$ 10,000
FirstFire Purchase Agreement [Member]
Stock Issued During Period, Value, Commitment Fee									$ 11,498
Stock Issued During Period, Additional Commitment Shares, New Issues | shares									36,536
Vista Purchase Agreement [Member]
Shares Issued, Price Per Share | $ / shares											$ 0.39
Stock Issued During Period, Shares, Commitment Fee | shares											250,000
Vista Purchase Agreement [Member] | Additional Paid-in Capital [Member]
Stock Issued During Period, Value, Commitment Fee											$ 98,500
Convertible Notes Payable [Member] | Vista Note [Member]
Short-term Debt, Total												$ 543,108		$ 543,108			$ 543,108
Debt Instrument, Increase (Decrease), Percentage		20.00%
Debt Instrument, Increase (Decrease), Net, Total		$ 90,518
Debt Instrument, Convertible, Number of Equity Instruments																	2,172,432
Gain (Loss) on Extinguishment of Debt, Total																	$ (578,942)
Convertible Notes Payable [Member] | Vista Capital Note Maturing on December 18, 2018 [Member]
Debt Instrument, Interest Rate, Stated Percentage												5.00%		5.00%			5.00%
Debt Instrument, Term												90 days
Convertible Notes Payable [Member] | Vista Capital [Member]
Debt Instrument, Face Amount											$ 500,000
Debt Instrument, Interest Rate, Stated Percentage											5.00%
Debt Instrument, Convertible, Conversion Price | $ / shares											$ 0.394	$ 0.25		$ 0.25			$ 0.25			$ 0.394
Proceeds from Notes Payable, Total											$ 500,000
Debt Instrument, Convertible, Beneficial Conversion Feature											$ 20,305
Convertible Notes Maturing on July 18, 2018 [Member]
Debt Instrument, Face Amount						$ 280,000
Debt Conversion, Original Debt, Amount						280,000
Debt Conversion, Original Debt, Accrued Interest Amount						$ 8,400
Debt Conversion, Converted Instrument, Shares Issued | shares						1,153,600
Shares Issued, Price Per Share | $ / shares						$ 0.25
First Fire [Member]
Debt Conversion, Original Debt, Amount													$ 95,761
Debt Conversion, Converted Instrument, Shares Issued | shares													383,047
First Fire [Member] | Convertible Debt [Member]
Debt Instrument, Face Amount										$ 150,000
Debt Conversion, Converted Instrument, Shares Issued | shares					217,960
Debt Instrument, Interest Rate, Stated Percentage										5.00%
Debt Instrument, Convertible, Conversion Price | $ / shares					$ 0.25					$ 0.394		$ 0.25		$ 0.25			$ 0.25			$ 0.394
Short-term Debt, Total					$ 54,239
FirstFire Purchase Agreement [Member]
Stock Issued During Period, Shares, Commitment Shares | shares										75,000
Share Price | $ / shares										$ 0.39
Stock Issued During Period, Value, Commitment Fee										$ 29,250