Note 9 - Stockholders' Equity (Details) (USD $)	12 Months Ended			12 Months Ended				1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 If Recipient Owns Greater Than 10% of Voting Power [Member] Incentive Stock Options [Member] Two Thousand Twelve Equity Incentive Plan [Member] Minimum [Member]	Dec. 31, 2013 Restricted Stock [Member] Two Thousand Twelve Equity Incentive Plan [Member]	Dec. 31, 2013 Restricted Stock [Member] Two Thousand Twelve Equity Incentive Plan [Member] Minimum [Member]	Dec. 31, 2012 Restricted Stock [Member] Employee [Member]	Mar. 31, 2013 Restricted Stock [Member] Consultants [Member]	Dec. 31, 2013 Restricted Stock [Member] Consultants [Member]	Dec. 31, 2012 Restricted Stock [Member] Officer [Member]	Dec. 31, 2013 Restricted Stock [Member]	Dec. 31, 2012 Restricted Stock [Member]	Dec. 31, 2013 Restricted Stock [Member] Minimum [Member] Employee [Member]	Dec. 31, 2012 Restricted Stock [Member] Minimum [Member] Employee [Member]	Dec. 31, 2013 Restricted Stock [Member] Minimum [Member] Consultants [Member]	Dec. 31, 2013 Restricted Stock [Member] Maximum [Member] Employee [Member]	Dec. 31, 2012 Restricted Stock [Member] Maximum [Member] Employee [Member]	Dec. 31, 2013 Restricted Stock [Member] Maximum [Member] Consultants [Member]	Dec. 31, 2013 Non-qualified Stock Options [Member] Two Thousand Twelve Equity Incentive Plan [Member] Minimum [Member]	Dec. 31, 2013 Incentive Stock Options [Member] Two Thousand Twelve Equity Incentive Plan [Member] Minimum [Member]	Dec. 31, 2013 Employee Stock Option [Member] Two Thousand Twelve Equity Incentive Plan [Member]	Dec. 31, 2013 Employee Stock Option [Member]	Dec. 31, 2013 Two Thousand Twelve Equity Incentive Plan [Member]	Dec. 31, 2012 Two Thousand Twelve Equity Incentive Plan [Member]	Dec. 31, 2013 Employee [Member]	Dec. 31, 2012 Employee [Member]	Dec. 31, 2013 Consultants [Member]	Dec. 31, 2013 Director [Member]	Dec. 31, 2012 Officers and Director [Member]	Dec. 31, 2012 Minimum [Member] Employee [Member]	Dec. 31, 2012 Minimum [Member] Officers and Director [Member]	Dec. 31, 2012 Maximum [Member] Employee [Member]	Dec. 31, 2012 Maximum [Member] Officers and Director [Member]
Note 9 - Stockholders' Equity (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted									122,500		1,867,500														1,745,000		122,500
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period											33 months										33 months
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)					$ 0.43			$ 0.56		$ 0.18	$ 0.44	$ 0.18	$ 0.30	$ 0.22	$ 0.34	$ 0.59	$ 0.26	$ 0.56
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross																							723,000		23,000	790,000		700,000	4,522,500
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in Dollars per share)																									$ 0.45			$ 0.37		$ 0.14	$ 0.15	$ 0.22	$ 0.37
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	2,464,332																						0	0					615,447
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price (in Dollars per share)	$ 0.18																												$ 0.08
Proceeds from Stock Options Exercised (in Dollars)	$ 433,800	$ 49,800
Stock Issued During Period Shares Warrants Exercised	11,772,500
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)	0.25
Proceeds from Warrant Exercises (in Dollars)	2,970,600
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period					1,747,500		393,000	120,000		3,764,500	1,867,500	4,157,500
Stock Repurchase Program, Authorized Amount (in Dollars)	1,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount (in Dollars)	782,600
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized																							9,656,958
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent				110.00%		100.00%													100.00%	100.00%
Period Of No Shares Vesting											3 months										3 months
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period																					10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)																							$ 0.31
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant																							2,644,115
Share Based Compensation Arrangement By Share Based Payment Award Options Vested Outstanding Number	8,020,808	8,015,960	6,803,675
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options	12,019,328
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Exercisable Options, Weighted Average Exercise Price (in Dollars per share)	$ 0.21
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Outstanding Options, Weighted Average Remaining Contractual Term	6 years 80 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value (in Dollars)	1,879,500
Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Vest Outstanding Number	3,841,861
Share Based Compensation Arrangement By Share Based Payment Award Options Expected To Be Forfeited	156,659
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options (in Dollars)																						356,700
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition		2 months																				10 months
Awards Estimated To Be Released In Future Periods											3,663,652
Awards Estimated To Be Forfeited In Future Periods											274,774
Share Price (in Dollars per share)	$ 0.37	$ 0.54
Aggregate Fair Market Value Of Unreleased Stock Awards (in Dollars)											1,457,200
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized (in Dollars)											$ 925,600