Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Purchase price of common stock expressed as a percentage of its fair value.

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Note 9 - Stock-Based Compensation (Details Textual) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2006
Non-employee Share-based Compensation [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized						$ 0
Incentive Stock Options (ISO's) [Member] \| 2006 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent									110.00%
2006 Equity Incentive Plan [Member]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized						110,235
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period									10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period									3 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized									1,200,000
Allocated Share-based Compensation Expense						$ 101,191	$ 143,435	$ 310,076
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition						1 year 328 days
Third Party Consulting Services [Member]
Allocated Share-based Compensation Expense						$ 100,000	20,500	0
Expense Associated with Warrant Modifications [Member]
General and Administrative Expense	$ 39,711					39,712	238,168	0
Warrant Exercise Fee [Member]
General and Administrative Expense						238,200
Allocated Share-based Compensation Expense						101,191	143,435	310,076
General and Administrative Expense		$ 364,889	$ 344,862	$ 766,330	$ 716,664	$ 1,807,605	$ 1,792,160	$ 1,752,765