Note 3 - Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]

	As of September 30, 2013
	Level 1		Level 2		Level 3		Total
Liabilities:
Compensatory stock options not yet issued (1)	$	-	$	-	$	166,783	$	166,783
Accrued warrant liability		-		-		3,594,741		3,594,741
Total liabilities	$	-	$	-	$	3,761,524	$	3,761,524

	As of December 31, 2012
	Level 1		Level 2		Level 3		Total
Liabilities:
Accrued warrant liability	$	-	$	-	$	4,105,659	$	4,105,659
Total liabilities	$	-	$	-	$	4,105,659	$	4,105,659

Schedule of Share-based Payment Award, Warrant Liability, Valuation Assumptions [Table Text Block]

	September 30, 2013					December 31, 2012
Stock Price	$			1.57		$			1.33
Exercise Price	$	1.60	-	5.00		$	1.60	-	5.00
Term in years		0.71	-	2.03			1.09	-	2.41
Volatility		48.41	-	79.57	%		82.75	-	95.91	%
Annual rate of quarterly dividends				0	%				0	%
Discount rate- bond equivalent yield		.07	-	.34	%		.17	-	.29	%

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

	September 30, 2013
Stock price	$	1.57
Term in years		5
Volatility		79.93	%
Annual rate of quarterly dividends		0	%
Discount rate - bond equivalent yield		1.40	%

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Three months ended September 30, 2013					Nine months ended September 30, 2013
	Accrued Warrant Liability			Compensatory Stock Options Not Yet Issued		Accrued Warrant Liability			Compensatory Stock Options Not Yet Issued
Beginning balance	$	4,757,770		$	63,838	$	4,105,659		$	-
Total (gains) or losses, realized and unrealized, included in earnings (1)(2)		(1,163,029	)		-		(510,918	)		-
Estimates and other changes in fair value		-			102,945		-			166,783
Settlements		-			-		-			-
Balance, September 30, 2013	$	3,594,741		$	166,783	$	3,594,741		$	166,783

	Three months ended September 30, 2012				Nine months ended September 30, 2012
	Accrued Warrant Liability		Compensatory Stock Options Not Yet Issued		Accrued Warrant Liability		Compensatory Stock Options Not Yet Issued
Beginning balance	$	3,022,933	$	114,617	$	7,285,959	$	378,750
Total (gains) or losses, realized and unrealized, included in earnings (1)(2)		4,423,775		-		160,749		51,823
Estimates and other changes in fair value		-		169,708		-		284,325
Settlements		-		-		-		(430,573	)
Balance, September 30, 2012	$	7,446,708	$	284,325	$	7,446,708	$	284,325

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]

	September 30, 2013
Description	Fair Value		Valuation Technique	Unobservable Input	Range
Compensatory stock options not yet issued	$	166,783	Black-scholes pricing model	Expected term		5
				Quantity of options		220,833
Accrued warrant liability		3,594,741	Black-scholes pricing model	Expected term		0.71	-	2.03
	$	3,761,524