Note 10 - Options and Warrants to Purchase Common Stock (Tables)

12 Months Ended

Dec. 31, 2016

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

		Warrants Outstanding and Exercisable
Exercise Price		Number Outstanding		Weighted Average Remaining Contractual Life (years)		Weighted Average Exercise Price
$	0.25		3,283,283		4.5	$	0.25
$	1.15		461,340		4.3	$	1.15
			3,744,623		4.5	$	0.36

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2016		2015
Dividend Yield		0%		0%
Expected Life (in years)		5.00		7.00
Expected Volatility		85.2%		72.9%
Risk Free Interest Rate		1.24%		2.00%

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	December 31, 2016					December 31, 2015
				Weighted					Weighted
				Average					Average
	Shares			Exercise Price		Shares			Exercise Price

Outstanding at beginning of period		17,806,472		$	1.00		17,053,116		$	1.02
Issued		3,771,488			0.24		988,355			0.63
Forfeited		(300,481	)		0.83		(235,000	)		0.77
Outstanding at end of period		21,277,479		$	0.87		17,806,472		$	1.00

Summary Of Vesting Information For Stock Options [Table Text Block]

	Vesting Information
Shares	Frequency	Begin Date	End Date
250,000	Immediately	01/01/2016	01/01/2016
158,206	Immediately	01/05/2016	01/05/2016
43,885	Immediately	01/06/2016	01/06/2016
32,415	Immediately	01/09/2016	01/09/2016
2,013,655	Immediately	05/11/2016	05/11/2016
350,000	Immediately	08/01/2016	08/01/2016
500,000	Monthly	07/06/2016	08/15/2017
81,522	Annually	01/19/2016	01/19/2018
81,395	Annually	01/27/2016	01/27/2018
80,000	Annually	01/28/2016	01/28/2018
144,815	Annually	01/29/2016	01/29/2018
35,595	Annually	02/01/2016	02/01/2018

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

Options Outstanding					Options Exercisable


	Weighted
	Average		Weighted				Weighted
	Remaining		Average				Average
	Contractual		Exercise		Number		Exercise
Number Outstanding	Life (years)		Price		Exercisable		Price

500,000		9.52	$	0.16		166,667	$	0.16
81,395		7.14	$	0.21		- 0 -	$	N/A
100,000		3.71	$	0.22		100,000	$	0.22
1,066,155		4.36	$	0.24		1,066,155	$	0.24
1,297,500		6.75	$	0.25		1,297,500	$	0.25
35,595		6.29	$	0.27		- 0 -	$	N/A
474,815		7.36	$	0.28		250,000	$	0.28
234,506		6.13	$	0.285		234,506	$	0.285
81,522		4.05	$	0.30		- 0 -	$	N/A
200,000		8.12	$	0.66		200,000	$	0.66
150,000		8.10	$	0.68		49,995	$	0.68
7,233,277		1.99	$	0.70		7,233,277	$	0.70
488,356		8.38	$	0.73		255,011	$	0.73
3,104,653		5.15	$	0.83		3,104,653	$	0.83
975,000		7.45	$	0.84		891,667	$	0.84
300,000		6.64	$	1.10		300,000	$	1.10
300,000		6.48	$	1.15		300,000	$	1.15
100,000		1.08	$	1.24		100,000	$	1.24
115,000		4.24	$	1.35		115,000	$	1.35
125,000		1.08	$	1.45		125,000	$	1.45
330,000		4.95	$	1.55		330,000	$	1.55
7,645		1.67	$	1.58		7,645	$	1.58
3,077,060		5.89	$	1.66		3,077,060	$	1.66
900,000		4.63	$	1.90		900,000	$	1.90
21,277,479		4.60	$	0.87		20,104,136	$	0.87

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

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