Note 7 - Stockholders' Equity (Details Textual)				3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2016 USD ($) $ / shares shares	Feb. 10, 2015 $ / shares shares	Jul. 02, 2014 $ / shares shares	Dec. 31, 2016 USD ($) $ / shares $ / item shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2016 USD ($) $ / shares $ / item shares	Dec. 31, 2015 USD ($) shares	Jun. 30, 2016 USD ($) $ / shares shares	Jun. 30, 2015 USD ($)
Common Stock Voting Rights Votes Per Share						1
Shares Held by Subsidiaries | shares				704,309	704,309	704,309	704,309
Stock Issued During Period, Shares, Issued for Services | shares						23,687
Share Price | $ / shares				$ 0.75		$ 0.75
Stock Issued During Period, Value, Issued for Services						$ 19,507
Stock Issued During Period, Shares, New Issues | shares						30,467
Stock Issued During Period, Value, New Issues						$ 22,850
Proceeds from the Sale of Units						105,000	$ 183,000
Adjustments to Additional Paid in Capital, Warrant Issued						5,250
Proceeds from Issuance of Common Stock						$ 22,850
Class of Warrant or Right, Outstanding | shares				8,400,000		8,400,000
Weighted Average Exercise Price for Outstanding Warrants | $ / shares						$ 1.26
Weighted Average Remaining Contractual Life for Outstanding Warrants						3 years 292 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period | shares						722,319
Common Stock, Share Subscribed but Unissued, Subscriptions Receivable				$ 40,000		$ 40,000
Sale of Units, Value						$ 105,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares						294,500	100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value						$ 113,770	$ 59,000
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options				$ 16,867		16,867
Note Receivable as Consideration for Warrants Exercise [Member]
Other Significant Noncash Transaction, Value of Consideration Received							105,000
Subscription Agreement [Member]
Share Price | $ / shares				$ 1		$ 1
Number of Share Per Unit | shares				0.5		0.5
Sale of Units, Number Of Units Issued | shares						140,000
Proceeds from the Sale of Units						$ 105,000
Proceeds from Sale of Units, Net of Commissions						$ 103,500
Warrant Fair Value Price Per Share | $ / shares				$ 0.05		$ 0.05
Adjustments to Additional Paid in Capital, Warrant Issued						$ 2,968
Adjustments to Additional Paid in Capital, Other						$ 102,032
Subscription Agreement Two [Member]
Share Price | $ / shares				$ 1		$ 1
Number of Share Per Unit | shares				1		1
Number of Warrants Per Unit				1		1
Sale of Units, Number Of Units Issued | shares						140,000
Warrant Fair Value Price Per Share | $ / shares				$ 0.05		$ 0.05
Adjustments to Additional Paid in Capital, Warrant Issued						$ 2,968
Adjustments to Additional Paid in Capital, Other						$ 102,032
Sale Of Units Price Per Unit Issued | $ / item				0.75		0.75
Warrant Component of Equity Unit, Number of Shares of Restricted Common Stock Called by Each Warrant | shares				0.5		0.5
Sale of Units, Value						$ 105,000
Restricted Stock [Member] | Subscription Agreement [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 0.75		$ 0.75
Restricted Stock [Member] | Subscriptions Receivable [Member]
Stock Issued During Period, Shares, New Issues | shares						10,000
Stock Issued During Period, Value, New Issues						$ 7,500
Class of Warrant or Right Exercised During Period | shares						10,000
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | shares				22,000,000		22,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Plan Modification, Incremental Compensation Cost						$ 177,471
Allocated Share-based Compensation Expense				$ 108,960	$ 74,320	$ 129,816	$ 89,640
Stock Bonus [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares						109,500
Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 0.75		$ 0.75
Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 3		$ 3
Maximum [Member] | Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period						10 years
Employees and Consultants [Member] | Stock Bonus [Member]
Stock Issued During Period, Value, New Issues						$ 100,000
Allocated Share-based Compensation Expense				$ 14,784		$ 14,784
Employees and Consultants [Member] | Minimum [Member]
Share Price | $ / shares				$ 0.75		$ 0.75
Employees and Consultants [Member] | Maximum [Member]
Share Price | $ / shares				$ 1.02		$ 1.02
President [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares		$ 1.50
Number of Share Per Unit | shares				1		1
Number of Warrants Per Unit				1		1
President [Member] | Stock Bonus [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares		150,000
Consultants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 0.90		$ 0.90
Deferred Compensation Converted to Common Stock Amount						$ 6,008
Deferred Compensation Converted to Common Stock Shares | shares						7,152
Deferred Compensation, Stock Conversion, Price Per Share | $ / shares				$ 0.84		$ 0.84
Class of Warrant or Right, Aggregate Purchase Price of Warrants or Rights						$ 1,250
Class of Warrant or Right Issued | shares				25,000		25,000
Various Warrant Holders [Member] | Subscription Agreement [Member]
Class of Warrant or Right Exercised During Period | shares	10,000
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares	$ 0.75							$ 0.75
Common Stock, Share Subscribed but Unissued, Subscriptions Receivable	$ 7,500							$ 7,500
Proceeds from Collection of Notes Receivable						$ 7,500
Common Stock Shares Issued upon Exercise of Warrants | shares						10,000
President and Various Consultants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 1		$ 1
Class of Warrant or Right, Aggregate Purchase Price of Warrants or Rights						$ 2,000
President and Various Consultants [Member] | Restricted Stock [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares				40,000		40,000
Chief Executive Officer [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 1.50		$ 1.50
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross | shares						450,000
Chief Executive Officer [Member] | Bassani Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 1		$ 1
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares				800,000		800,000
Chief Executive Officer [Member] | Bassani Warrants [Member] | Convertible Debt [Member]
Debt Instrument, Interest Rate, Stated Percentage				4.00%		4.00%
Chief Executive Officer [Member] | Bassani Warrants [Member] | Note Receivable as Consideration for Warrants Exercise [Member]
Other Significant Noncash Transaction, Value of Consideration Received						$ 40,000
Centerpoint [Member]
Shares Held by Subsidiaries | shares				704,309		704,309
Series B Preferred Stock [Member]
Preferred Stock, Shares Outstanding | shares			200
Preferred Stock, Par or Stated Value Per Share | $ / shares			$ 0.01
Preferred Stock, Redemption Price Per Share | $ / shares			$ 2
Preferred Stock, Dividend Rate, Percentage			2.50%
Convertible Preferred Stock Redemption Period			3 years
Dividends, Preferred Stock				$ 500		$ 1,000		$ 2,000	$ 2,000
Dividends Payable				$ 11,000		$ 11,000