Note 9 - Share Based Payments (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

	Black-Scholes-Merton
Volatility		174	%
Expected life of options (in years)		5
Risk-free interest rate		2.50	%
Dividend yield		0	%

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

							Weighted Average
	Number			Weighted			Remaining		Aggregate
	Of			Average			Contractual		Intrinsic
	Shares			Exercise Price			Life (years)		Value*
Shares under option, January 1, 2017		2,220,000		$	0.48			-	$	-
Options granted		2,557,000		$	0.10
Options exercised		-		$	-
Options cancelled and expired		(2,316,000	)	$	(0.41	)
Shares under option, December 31, 2017		2,461,000		$	0.15			8.66
Options granted		250,000		$	0.49
Options exercised		(90,000	)	$	0.10
Options cancelled and expired		(49,000	)	$	(0.37	)
Shares under option, December 31, 2018		2,572,000		$	0.18			7.80	$	1,700

Schedule of Nonvested Share Activity [Table Text Block]

				Weighted
	Number of			Average
	Shares			Fair Value
Non-vested stock options at January 1, 2017		1,340,000		$	0.34
Options granted		2,557,000		$	0.13
Vested during period		-		$	-
Options cancelled		(1,760,000	)	$	(0.29	)
Non-vested shares under option, December 31, 2017		2,137,000		$	0.13
Options granted		250,000		$	0.47
Vested during period		(1,231,000	)	$	(0.13	)
Options cancelled		(17,500	)	$	(0.13	)
Non-vested shares under option, December 31, 2018		1,138,500		$	0.20

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

			Weighted Average		Weighted
			Remaining		Average		Aggregate
			Contractual		Exercise		Intrinsic
	Options		Life (years)		Price		Value
Stock options exercisable		1,433,500		7.28	$	0.17	$	954
Stock options expected to vest		1,138,500		8.45	$	0.19	$	745
Options exercisable and expected to vest		2,572,000

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

				Weighted Average
	Number of			Grant Date
	Shares			Fair Value
Unvested January 1, 2017		249,000		$	0.45
Granted restricted stock		-		$	-
Cancelled restricted stock		(54,000	)		(0.08	)
Vested restricted stock		(165,000	)	$	(0.562	)
Unvested December 31, 2017		30,000		$	0.15
Granted restricted stock		827,000		$	0.49
Cancelled restricted stock		(30,000	)		(0.15	)
Vested restricted stock		-		$	-
Unvested December 31, 2018		827,000		$	0.49