Note 2 - Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2013

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

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

	Number of Options			Weighted Average Option Price
Balance, December 31, 2012		2,052,783		$	4.06
Granted		11,000			2.47
Exercised		-			-
Cancelled		(397,054	)		4.71
Balance, June 30, 2013		1,666,729		$	3.90

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

	Three months ended June 30,						Six months ended June 30,
	2013			2012			2013			2012
Weighted average risk free interest rates		1.86	%		1.96	%		2.00	%		1.93	%
Weighted average life (in years)		10			10			10			10
Volatility		66.10	%		66.19	%		66.23	%		65.90	%
Expected dividend yield		-			-			-			-
Weighted average grant-date fair value per share of options granted	$	1.80		$	4.18		$	1.80		$	3.56

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

	Restricted Stock Shares			Weighted Average Grant Date Value
Nonvested restricted stock at December 31, 2012		112,015		$	3.17
Granted		-			-
Vested		(40,195	)		3.08
Cancelled/Forfeited		(10,164	)		3.35
Nonvested restricted stock at June 30, 2013		61,656		$	3.21