Note 9 - Stock Options (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Common Shares Reserved for Future Issuance [Table text Block]

(In thousands)	Common Shares Reserved for Future Issuance
Preferred Stock		1,067
2015 Plan		600
2005 Plan		2,185
Total		3,852

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

	2016					2015
	Number of Options (in thousands)			Weighted Average Exercise Price		Number of Options (in thousands)			Weighted Average Exercise Price
Outstanding at beginning of year		2,598		$	0.63		3,076		$	0.86
Granted at price = market value		69			0.36		43			2.13
Granted at price > market value		—			—		—			—
Exercised		(136	)		0.73		(150	)		0.44
Forfeited		(18	)		1.80		(10	)		1.36
Expired		(259	)		0.35		(361	)		2.77
Outstanding at end of year		2,254		$	0.64		2,598		$	0.63
Options exercisable at end of year		2,079		$	0.59		2,287		$	0.51

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

			Options Outstanding						Options Exercisable
Range of Exercise Prices			Outstanding at 12/31/16 (in thousands)		Weighted Average Remaining Contractual Life (in years)		Weighted Average Exercise Price		Exercisable at 12/31/1 6 (in thousands)		Weighted Average Exercise Price
$0.20	-	$0.50		1,296		2.56	$	0.34		1,228	$	0.34
$0.51	-	$1.00		661		2.95	$	0.67		661	$	0.67
$1.01	-	$2.73		297		5.62	$	1.91		190	$	1.89
				2,254		3.07	$	0.64		2,079	$	0.59

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

	Outstanding Stock Options (Fully Vested and Expected to Vest)*		Options that are Exercisable
As of December 31, 201 6
Number of outstanding options (in thousands)		2,254		2,079
Weighted average remaining contractual life		3.07		2.69
Weighted average exercise price per share	$	0.64	$	0.59
Intrinsic value (in thousands)	$	121	$	116