Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Narrative (Details)

v3.20.4
Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Research and development $ 4,631,000 $ 4,679,000
Inventory 353,000 0
Write-off of intangible assets 291,000 0
Interest or penalties recognized $ 0 0
Lab equipment    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property and equipment, useful life (in years) 5 years  
Computer equipment and software    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property and equipment, useful life (in years) 3 years  
Furniture    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property and equipment, useful life (in years) 3 years  
Patents    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Research and development $ 400,000  
Trademarks    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Intangible assets, gross 100,000 $ 100,000
Write-off of intangible assets $ 19,700  
Employee Stock Option    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Antidilutive securities excluded from computation of EPS (in shares) 3,919,550 2,883,550
Restricted Stock    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Antidilutive securities excluded from computation of EPS (in shares) 308,344 158,336
Convertible Debt Securities    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Antidilutive securities excluded from computation of EPS (in shares) 1,324,608 1,374,608
Minimum    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property and equipment, useful life (in years) 3 years  
Maximum    
New Accounting Pronouncements or Change in Accounting Principle [Line Items]    
Property and equipment, useful life (in years) 5 years