Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

v3.10.0.1
Income Taxes (Details Textual) - USD ($)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
IncomeTaxes [Line Items]    
Operating Loss Carryforwards, Expiration Period 2038  
Operating Loss Carryforwards $ 638,000  
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ 416,000 $ 6,800,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 34.00%
Domestic Tax Authority [Member]    
IncomeTaxes [Line Items]    
Operating Loss Carryforwards $ 51,974,000  
Tax Credit Carryforward, Amount 1,714,000  
Foreign Tax Authority [Member]    
IncomeTaxes [Line Items]    
Operating Loss Carryforwards 2,047,000  
Tax Credit Carryforward, Amount 25,000  
State and Local Jurisdiction [Member]    
IncomeTaxes [Line Items]    
Operating Loss Carryforwards 35,840,000  
Tax Credit Carryforward, Amount $ 489,000  
Research Tax Credit Carryforward [Member]    
IncomeTaxes [Line Items]    
Operating Loss Carryforwards, Expiration Period 2038