Note 12 - Stock Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2013

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

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

Weighted-average	2013			2012
Expected volatility		91.36	%		128.21	%
Expected dividend yields		0.0	%		0.0	%
Expected terms (in years)		6.0			6.0
Risk-free interest rate		1.62	%		0.84	%
Expected forfeiture rate		5.0	%		5.0	%

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

Option Awards	Covered Shares			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value  (thousands)
Outstanding at January 1, 2012		2,919,232		$	0.64		6.50	$	3,302
Granted in 2012		430,000			1.12		–		270
Exercised/cancelled		(287,839	)		0.63		–		307
Outstanding at December 31, 2012		3,061,393			0.71		6.50		3,169
Granted in 2013 (1)		793,000			2.02		–		36
Exercised/cancelled		(202,233	)		0.61		–		286
Forfeited or expired		(101,561	)		1.19		–		–
Outstanding at December 31, 2013		3,550,599		$	0.99		6.64	$	3,577
Exercisable at December 31, 2013		2,285,970		$	0.61		5.32	$	3,130
Vested and expected to vest at December 31, 2013		3,441,701		$	0.97		6.56	$	3,548

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

			Options Awards Outstanding						Options Awards Exercisable
Range of Exercise Prices			Covered Shares Outstanding		Weighted Average Remaining Contractual Life		Weighted Average Exercise Price		Covered Shares Exercisable		Weighted Average Exercise Price
	Less than	$1.00		2,038,205		5.06		0.53		1,954,614	$	0.51
$1.00	-	$2.00		1,057,894		8.43		1.39		330,106	$	1.20
$2.01	-	$4.00		454,500		9.58		2.13		1,250	$	2.15
	Outstanding at December 31, 2013			3,550,599				0.99		2,285,970	$	0.61

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

	Shares			Weighted-Average Grant Date Fair Value per Share
Unvested at January 1, 2012		100,000		$	2.34
Granted		25,000			1.09
Vested		(20,000	)		2.34
Forfeited		–			–
Unvested at December 31, 2012		105,000			2.04
Granted		–			–
Vested		(25,000	)		2.09
Forfeited		–			–
Unvested at December 31, 2013		80,000		$	2.03