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Income taxes (Tables)
12 Months Ended
Dec. 31, 2018
Income Taxes  
Reconciliations of income taxes
    2018     2017  
Statutory tax rate     21%       34%  
                 
Expected tax benefit   $ (214,000 )   $ (280,000 )
Nondeductible expenses     0       0  
Increase in valuation allowance     214,000       280,000  
                 
Tax provision (benefit) as reported   $ 0     $ 0  
                 
Components of our deferred tax asset
    2018     2017  
Deferred tax assets:                
Loss carry-forwards   $ 2,278,000     $ 2,065,000  
Valuation allowance     (2,278,000 )     (2,065,000 )
                 
Net deferred taxes   $ 0     $ 0