Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Income Taxes (Details Textual)

v3.10.0.1
Note 10 - Income Taxes (Details Textual)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2018
Effective Income Tax Rate Reconciliation, Percent, Total 0.00% 0.00% 0.00% 0.00%  
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent     21.00%    
Scenario, Forecast [Member]          
Effective Income Tax Rate Reconciliation, Percent, Total         0.00%