XML 56 R40.htm IDEA: XBRL DOCUMENT v3.19.1
Note 9 - Stock-based Compensation (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Stock Issued During Period, Shares, Issued for Services 17,500,000    
Stock Issued During Period, Value, Issued for Services $ 513,500    
Stock Issued During Period, Value Expensed During the Period, Issued for Services 314,419    
Prepaid Expense, Value of Stock Issued for Services During Period 199,081    
General and Administrative Expense, Total 1,647,268 $ 1,232,368 $ 2,131,426
Expense Associated with Warrant Modifications [Member]      
General and Administrative Expense, Total     912,862
2006 Equity Incentive Plan [Member]      
Allocated Share-based Compensation Expense, Total 155,304 $ 57,224 $ 54,805
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total $ 211,234    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 73 days