Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

v3.20.1
Income Taxes (Details) - USD ($)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2019
Operating Loss Carryforwards [Line Items]    
Accrued penalties and interest accrued   $ 0
Net operating loss carryforwards   52,200,000
Reduction of deferred taxes due to change in tax rate $ 2,200,000  
Federal and State    
Operating Loss Carryforwards [Line Items]    
Net operating loss carryforwards   32,500,000
Net operating loss carryforwards, not subject to expiration   27,000,000
Research and experimental tax credits    
Operating Loss Carryforwards [Line Items]    
Tax credit   $ 1,100,000