Note 5 - Stock Based Compensation (Details) (USD $)	6 Months Ended		6 Months Ended							132 Months Ended	186 Months Ended	3 Months Ended	6 Months Ended		6 Months Ended			6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014 Restricted Stock [Member]	Jun. 30, 2013 Restricted Stock [Member]	Jun. 30, 2014 Restricted Stock [Member] Minimum [Member]	Jun. 30, 2014 Restricted Stock [Member] Maximum [Member]	Jun. 30, 2014 Nineteen Ninety Nine Director Stock Options [Member]	Jun. 30, 2014 Director Stock Option Plan - 1999 (Member)	Jun. 30, 2014 Nineteen Ninety Nine Stock Incentive Plan [Member]	Dec. 31, 2009 Nineteen Ninety Nine Stock Incentive Plan [Member]	Jun. 30, 2014 Nineteen Ninety Nine Stock Incentive Plan [Member]	Apr. 12, 2010 Two Thousand Nine Plan [Member]	Jun. 30, 2014 Two Thousand Nine Plan [Member]	May 19, 2010 Two Thousand Nine Plan [Member]	Jun. 30, 2014 Plan 2009 (Member)	May 29, 2014 Plan 2009 (Member)	Mar. 31, 2014 1999 Plan, 2009 Plan and Director Plan [Member]	Jun. 30, 2014 Minimum [Member] Nineteen Ninety Nine Director Stock Options [Member]
Note 5 - Stock Based Compensation (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized							1,975,000		3,200,000		3,200,000			5,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	208,000						2,339,798				2,892,500				1,473,748
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	126,000							777,782							230,420
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period					1 year	3 years				4 years								1 year
Award Term							10 years				10 years
Percent FMV Common Stock Options Granted									100.00%
Period from Date of Grant										1 year
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, Number of Shares Available for Grant																1,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee													1,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	2,615,500	2,643,500											1,858,000				2,615,000
Common Stock, Capital Shares Reserved for Future Issuance																	2,215,820
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)	$ 0.89
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value (in Dollars)	$ 10,564,685
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value (in Dollars)	6,498,289
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value (in Dollars)	420,590
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)	304,000		256,000
Allocated Share-based Compensation Expense (in Dollars)			$ 365,000	$ 9,800