Note 10 - Stock Option Plan (Tables)

12 Months Ended

Dec. 31, 2016

A summary of activity follows (shares in thousands):

	2016		2015
		Weighted-		Weighted-
		Average		Average
	Number	Exercise	Number	Exercise
	of Shares	Price	of Shares	Price

Outstanding as of beginning of the year	1,470	$1.53	1,333	$2.08
Granted	512	0.90	221	0.39
Exercised	(175)	0.40	-	-
Forfeited or expired	(182)	6.59	(84)	7.23
Outstanding as of end of the year	1,625	0.88	1,470	1.53

Exercisable as of end of the year	1,056	0.95	1,065	2.01

Schedule of Stock Options Valuation Assumptions

The fair value of each option grant is estimated on the date of the grant using the Black-Scholes option-pricing model with the following weighted-average assumptions used for the grants made in 2016 and 2015:

	2016	2015
Expected life (in years)	3.5	3.5
Risk free interest rate	1.04%	0.91%
Expected volatility	229%	340%
Dividend yield	-	-