Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Summary of Stock Options (Details Textual)

v3.3.0.814
Note 8 - Summary of Stock Options (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Jul. 22, 2015
Jul. 21, 2015
Dec. 31, 2014
The 2006 Stock Option Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 0   0        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 322,069   322,069        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price $ 1.54   $ 1.54        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term     7 years 25 days        
Conversion of Stock Exchange Ratio     0.0080497        
Two Thousand Five Plan [Member]              
Common Stock, Capital Shares Reserved for Future Issuance 22,095   22,095        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 22,095   22,095        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price $ 12.83   $ 12.83        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term     1 year 222 days        
The 2013 Plan [Member] | Holdings Greater Than 10 Percent of Shares Outstanding [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period     5 years        
The 2013 Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 347,000   1,082,000        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 0.51   $ 0.32        
Common Stock, Capital Shares Reserved for Future Issuance 6,769,152   6,769,152        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 3,008,619   3,008,619        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price $ 0.73   $ 0.73        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term     9 years 32 days        
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     4 years        
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum     10.00%        
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent     110.00%        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized         10,100,000 3,111,587  
Employees [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   1,901,476   1,901,476      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 0.32   $ 0.32      
Employee Stock Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate     0.00%        
Allocated Share-based Compensation Expense $ 55,000 $ 113,000 $ 145,000 $ 144,000      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     3 years 87 days        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross     1,082,000        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate 0.00% 0.00% 0.00% 0.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 3,352,783   3,352,783       2,291,783
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price         $ 1.02
Allocated Share-based Compensation Expense $ 55,000 $ 113,000 $ 145,000 $ 144,000      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 701,000   $ 701,000