Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

v3.8.0.1
Income Taxes (Narrative) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Operating Loss Carryforwards [Line Items]      
Change in valuation allowance   $ (5,413,000) $ 3,687,000
Targeted deferred tax asset amount, after valuation allowance recorded   0  
Change in ownership limit, operating loss   207,000  
Pre change net operating loss carryforward   6,000,000  
Liability for uncertain tax positions   0  
Accrued interest and penalties   0  
Effect of tax rate changes on deferred tax assets and liabilities   7,657,000  
Tax Cuts and Jobs Act of 2017, change in tax rate, deferred tax assets, valuation allowance   7,657,000  
Scenario, Plan [Member]      
Operating Loss Carryforwards [Line Items]      
U. S. corporate income tax rate 21.00%    
Federal [Member]      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards   36,000,000  
State [Member]      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards   $ 34,000,000  
Earliest Tax Year [Member] | Federal [Member]      
Operating Loss Carryforwards [Line Items]      
Tax years subject to examination   2006  
Earliest Tax Year [Member] | State [Member]      
Operating Loss Carryforwards [Line Items]      
Tax years subject to examination   2006