Note 2 - Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2014

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

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

	Awards Available			Options Outstanding			Weighted Average Exercise Price
Balance December 31, 2013		1,082			8,986		$	4.99
Plan amendment		3,750			-			-
Restricted stock unit awards granted		(593	)		-			-
Restricted stock unit awards cancelled		-			-			-
Stock option awards granted		(614	)		614			10.78
Stock option awards exercised		-			(1,165	)		4.86
Stock option awards cancelled		88			(88	)		8.83
Balance September 30, 2014		3,713			8,347		$	5.39

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

	2014			2013
Expected Life in Years		5.5			5.0
Expected Volatility		87	%		85	%
Expected Dividend Yield		0.0	%		0.0	%
Risk-Free Interest Rate		1.6	%		0.9	%