Note 15 - Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2012

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

	Three Months Ended June 30,		Six Months Ended June 30,
	2012	2011	2012	2011
Expected volatility	63.8%	60.6%	62.0%	59.6%
Expected dividends	--	--	--	--
Expected term (in years)	5.9	6.0	6.8	6.0
Risk-free rate	1.1%	1.8%	1.4%	1.9%
Forfeiture rate - employees	25%	20%	25%	20%
Forfeiture rate – officers and directors	0%	0%	0%	0%

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

Options	Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding at January 1, 2012		8,027,950	$	1.09
Granted		3,073,031	$	0.53
Exercised		(42,000)	$	0.31
Forfeited or Expired		(1,138,321)	$	1.23
Outstanding at June 30, 2012		9,920,660	$	0.90		6.6	$	1,000
Exercisable at June 30, 2012		5,496,985	$	1.13		5.2	$	--

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

	Shares			Weighted Average Grant Date Fair Value
Non-vested balance at January 1, 2012		40,000		$	1.24
Changes during the period:
Shares granted		40,000			0.43
Shares vested		(40,000	)		1.24
Shares forfeited		--			--
Non-vested balance as of June 30, 2012		40,000		$	0.43