Note 3 - Stock-Based Compensation Plans and Warrants (Details) (USD $)	0 Months Ended	1 Months Ended		6 Months Ended						6 Months Ended		0 Months Ended			3 Months Ended			1 Months Ended			6 Months Ended	54 Months Ended		3 Months Ended
	Jun. 30, 2014	Oct. 30, 2012	Nov. 30, 2011	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Common Stock [Member] 2009 Equity Incentive Plan [Member]	Jun. 10, 2014 Restricted Stock Units (RSUs) [Member] Senior Management [Member] 2014 Equity Incentive Plan [Member]	Jun. 30, 2014 Restricted Stock Units (RSUs) [Member] 2014 Equity Incentive Plan [Member]	Jun. 30, 2014 Employee Stock Option [Member]	Jun. 30, 2013 Employee Stock Option [Member]	Jan. 10, 2011 Restricted Stock [Member] 2009 Equity Incentive Plan [Member]	Jan. 14, 2010 Restricted Stock [Member] 2009 Equity Incentive Plan [Member]	Jun. 30, 2014 Restricted Stock [Member] 2009 Equity Incentive Plan [Member]	Mar. 31, 2014 Accrues Quarterly [Member] Outside Director Compensation Plan [Member]	Jun. 30, 2014 Director [Member] 2009 Equity Incentive Plan [Member]	Jun. 30, 2014 2003 Management Equity Incentive Plan [Member]	Jun. 30, 2014 2009 Equity Incentive Plan [Member]	May 31, 2014 2009 Equity Incentive Plan [Member]	Dec. 18, 2009 2009 Equity Incentive Plan [Member]	Jun. 30, 2014 2009 Equity Incentive Plan [Member]	Jun. 30, 2014 2009 Equity Incentive Plan [Member]	Jun. 10, 2014 2014 Equity Incentive Plan [Member]	Mar. 31, 2014 Outside Director Compensation Plan [Member]	Jun. 10, 2014 Water Project [Member] Restricted Stock Units (RSUs) [Member] 2014 Equity Incentive Plan [Member]
Note 3 - Stock-Based Compensation Plans and Warrants (Details) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number				822,500			507,500										315,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized								162,500												850,000			675,000		200,000
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period																				10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period																				24 months
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period			666,667																			527,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period																		45,235	20,000
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number									0
Officers' Compensation (in Dollars)															$ 7,500									$ 30,000
Allocated Share-based Compensation Expense (in Dollars)				61,000	40,000					0	40,000				5,000									20,000
Number Of Equity Incentive Plans				3
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period										0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	14,514											140,000	115,000								507,500
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant														595,000
Common Stock, Shares, Issued		250,000		16,172,239		16,152,756										42,265
Proceeds from Issuance of Private Placement (in Dollars)			6,000,000
Sale of Stock, Price Per Share (in Dollars per share)			$ 9
Base For Issuing Purchase Warrants			3
Warrant Issued			1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per share)		$ 10	$ 13
Proceeds from Lines of Credit (in Dollars)		$ 5,000,000
Class of Warrant or Right, Outstanding				472,222