Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Subsequent Events (Details Textual)

v3.5.0.2
Note 11 - Subsequent Events (Details Textual) - The 2013 Plan [Member] - shares
Jul. 11, 2016
Jul. 10, 2016
Jul. 22, 2015
Jul. 21, 2015
Subsequent Event [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized 737,500      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 2,000,000 1,262,500    
Percentage of Annual Increase of Total Number of Shares Outstanding 4.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized     1,262,500 388,949