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
Dec. 31, 2015
Operating Loss Carryforwards [Line Items]        
Provision for income taxes  
Operating loss carry-forward   $ 127,877,000 111,605,000  
Net operating loss carry-forwards expiration   Dec. 31, 2037    
U.S. corporate income tax rate   35.00%    
Impact on income tax expenses   $ 0    
Scenario, Plan [Member]        
Operating Loss Carryforwards [Line Items]        
U.S. corporate income tax rate 21.00%      
Federal And State [Member]        
Operating Loss Carryforwards [Line Items]        
Provision for income taxes   $ 0 $ 0 $ 0