Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stock-based Compensation (Details Textual)

v3.8.0.1
Note 6 - Stock-based Compensation (Details Textual)
1 Months Ended 3 Months Ended
Mar. 31, 2018
USD ($)
shares
Sep. 30, 2016
$ / shares
shares
Mar. 31, 2018
USD ($)
shares
Mar. 31, 2017
USD ($)
Allocated Share-based Compensation Expense, Total | $     $ 138,000 $ 147,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense | $     0 $ 0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total | $ $ 195,000   $ 195,000  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     1 year 109 days  
The 2014 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized | shares 10,000,000      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized | shares 15,000,000   15,000,000  
Employee Stock Option [Member] | Scenario, Plan [Member] | The 2016 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage   100.00%    
Share-based Compensation Arrangement By Share-based Payment Award Award, Vesting, Threshold Consecutive Trading Days   5    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price | $ / shares   $ 2.50    
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period   10 years    
Employee Stock Option [Member] | Scenario, Plan [Member] | Chief Executive Officer [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total | shares   5,000,000