Note 5 - Stock-Based Compensation (Details) (USD $)	0 Months Ended	3 Months Ended	9 Months Ended	132 Months Ended		9 Months Ended	3 Months Ended	9 Months Ended			9 Months Ended	177 Months Ended		9 Months Ended	177 Months Ended
	Apr. 12, 2010	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2009	Dec. 31, 2012	Sep. 30, 2013 Restricted Stock [Member] 2009 Equity Incentive Plan [Member]	Sep. 30, 2013 Restricted Stock [Member]	Sep. 30, 2013 Restricted Stock [Member] Minimum [Member]	Sep. 30, 2013 Restricted Stock [Member] Maximum [Member]	Dec. 31, 2009 1998 Directors Stock Plan [Member]	Sep. 30, 2013 1999 Directors Stock Plan [Member]	Sep. 30, 2013 1999 Directors Stock Plan [Member]	Dec. 31, 2009 1999 Directors Stock Plan [Member]	Sep. 30, 2013 1999 Stock Incentive Plan [Member]	Sep. 30, 2013 1999 Stock Incentive Plan [Member]	Sep. 30, 2013 2009 Equity Incentive Plan [Member]	May 19, 2010 2009 Equity Incentive Plan [Member]	May 19, 2010 2009 Equity Incentive Plan [Member] Maximum Number of Shares Allowed Per Year [Member]
Note 5 - Stock-Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized										600,000			1,975,000	3,200,000	3,200,000		4,000,000	1,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			205,500									2,179,798
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period			79,664			230,420						727,782
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights											one year
Award Term											10 years	10 years		10 years	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures															2,892,500
Percent FMV Common Stock Options Granted				100.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								1 year	3 years					4 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized	2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number			2,606,666		2,606,500	1,148,748										1,882,666
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)			$ 0.33
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value (in Dollars)			$ 1,873,180
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value (in Dollars)			929,055
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)			92,976
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)			312,000				6,500
Allocated Share-based Compensation Expense (in Dollars)		$ 104,200					$ 4,900