Note 6 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Stock price	$	4.45
Exercise price	$	5.00
Term in years		2.50
Volatility		69.36	%
Annual rate of quarterly dividends		-
Discount rate- bond equivalent yield		0.53	%

Stock price	$	2.48
Exercise price	$	3.00
Term in years		2.51
Volatility		79.70	%
Annual rate of quarterly dividends		-
Discount rate- bond equivalent yield		0.35	%

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

	Number of Warrants			Weighted Average Exercise Price			Number of Common Shares Exerciseable Into
Outstanding at December  31, 2010		7,530,689		$	3.71			9,450,633
Granted		3,112,425			4.76			3,112,425
Exercise Price Adjustment		-			(0.70	)		592,341
Exercised		(301,895	)		3.96			(371,206	)
Forfeited, Canceled		(220,000	)		8.09			(220,000	)
Outstanding at December  31, 2011		10,121,219			3.76			12,564,193
Granted		4,312,500			3.00			4,312,500
Exercise Price Adjustment		-			(0.18	)		-
Forfeited, Canceled		(4,055,724	)		5.07			(6,498,698	)
Outstanding at December  31, 2012		10,377,995		$	2.94			10,377,995

Schedule Of Share-Based Compensation Shares Authorized Under Warrants By Exercise Price Range [Table Text Block]

Expiration Date	Current Exercise Price		Number of Warrants
3/2/2015	$	2.00		935,385
6/17/2015		5.00		176,175
2/12/2016		1.60		929,826
3/19/2016		1.60		1,921,795
3/26/2016		1.60		634,189
6/22/2016		5.00		1,468,125
10/24/2017		3.00		4,312,500
				10,377,995

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

	Year Ended December 31, 2012
	Total Stock Options Outstanding			Weighted Average Exercise Price per Share		Nonvested Stock Options			Weighted Average Grant Date Fair Value per Share
December 31, 2011		4,117,979		$	5.21		356,100		$	3.38
Granted		1,132,383			1.89		1,132,383			1.32
Vested		-			-		(960,233	)		1.61
Exercised		(1,250	)		1.90		-			-
Forfeited, Canceled		(232,196	)		3.49		(123,750	)		1.73
December 31, 2012		5,016,916		$	4.54		404,500		$	2.30

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

	Stock Options Outstanding		Vested Stock Options
Quantity		5,016,916		4,612,416
Weighted-average exercise price	$	4.54	$	4.66
Weighted Average Remaining Contractual Term (in Years)		7.33		7.20
Intrinsic value	$	38,634	$	33,522