Note 5 - Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2013

Stockholders' Equity Note [Abstract]

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

	Nine months ended September 30, 2013
	Total Stock Options Outstanding			Weighted Average Exercise Price per Share		Nonvested Stock Options			Weighted Average Grant Date Fair Value per Share
December 31, 2012		5,016,916		$	4.54		404,500		$	2.30
Granted		898,604			1.67		898,604			1.21
Vested		-			-		(506,875	)		1.69
Exercised		(9,681	)		1.28		-			-
Forfeited, Canceled		(296,927	)		3.66		(151,250	)		0.97
September 30, 2013		5,608,912		$	4.13		644,979		$	1.56

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

	As of September 30, 2013
	Stock Options Outstanding		Vested Stock  Options
Quantity		5,608,912		4,963,933
Weighted-average exercise price	$	4.13	$	4.39
Weighted Average Remaining Contractual Term (in Years)		7.01		6.72
Intrinsic value	$	134,340	$	122,487