Note 14 - Employee Equity Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

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

	Number of shares			Weighted average exercise price (per share)		Weighted average remaining contractual term (in years)		Aggregate intrinsic value
Outstanding at December 31, 2013		5,745,000		$	0.29		1.70	$	93,945
Granted		150,000			0.16
Exercised		(150,000	)		0.13
Forfeited/cancelled/expired		(2,615,000	)		0.40
Outstanding at December 31, 2014		3,130,000			0.20		1.59	$	364,900
Granted		100,000			0.30
Exercised		(7,500	)		0.10
Forfeited/cancelled/expired		-0-			-0-
Outstanding at March 31, 2015		3,222,500		$	0.21		1.45	$	366,148
Vested and exercisable at March 31, 2015		2,872,500		$	0.21		1.13	$	337,348

Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block]

	Number of options vested		Fair value of  options vested
Fair value of options vesting during the three months ended March 31, 2015		25,000	$	3,665
Fair value of options vesting during the three months ended March 31, 2014		25,000	$	1,055

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

Awards breakdown by price range at March 31, 2015
			Outstanding						Vested
Strike price range ($)			Outstanding stock options		Weighted average remaining contractual life		Weighted average outstanding strike price		Vested stock options		Weighted average remaining vested contractual life		Weighted average vested strike price
0.00	to	0.20		2,072,500		1.73	$	0.13		1,872,500		1.50	$	0.12
0.21	to	0.29		600,000		0.68		0.24		550,000		0.45		0.25
0.30	to	0.49		100,000		4.93		0.30		-0-		0.00		0.00
0.50	to	0.70		450,000		0.43		0.50		450,000		0.43		0.50
0.00	to	0.70		3,222,500		1.45	$	0.21		2,872,500		1.13	$	0.21

Awards breakdown by price range at December 31, 2014
			Outstanding						Vested
Strike price range ($)			Outstanding stock options		Weighted average remaining contractual life		Weighted average outstanding strike price		Vested stock options		Weighted average remaining vested contractual life		Weighted average vested strike price
0.00	to	0.20		2,080,000		1.98	$	0.13		1,855,000		1.72	$	0.12
0.21	to	0.29		600,000		0.92		0.24		550,000		0.69		0.25
0.30	to	0.49		-0-		0.00		0.00		-0-		0.00		0.00
0.50	to	0.70		450,000		0.68		0.50		450,000		0.68		0.50
0.00	to	0.70		3,130,000		1.59	$	0.20		2,855,000		1.35	$	0.21

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

	Stock option assumptions for the period ended
Stock option assumptions	March 31, 2015		December 31, 2014
Risk-free interest rate		0.99%		0.93%
Expected dividend yield		0.0%		0.0%
Expected volatility		192.7%		199.0%
Expected life of options (in years)		5		5

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

	Weighted average grant date fair value
	2015		2014
Stock options granted during the three month period ended March 31,	$	0.29	$	0.15
Stock options vested during the three month period ended March 31,	$	0.15	$	0.04
Stock options forfeited during the three month period ended March 31,	$	-0-	$	0.36

Schedule of Nonvested Share Activity [Table Text Block]

	Shares underlying stock options		Weighted average grant date fair value
Nonvested shares at January 1, 2015		275,000	$	0.17
Nonvested shares at March 31, 2015		350,000	$	0.21