Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.20.2
Subsequent Events (Details)
$ / shares in Units, $ in Millions
Oct. 14, 2020
USD ($)
$ / shares
shares
Oct. 08, 2020
$ / shares
shares
Sep. 08, 2020
employee
Oct. 31, 2020
Aug. 31, 2020
$ / shares
Subsequent Event [Line Items]          
Price per share | $ / shares         $ 3.62
Subsequent Event [Member]          
Subsequent Event [Line Items]          
Lease term       64 months  
Subsequent Event [Member] | Diamond Litigation          
Subsequent Event [Line Items]          
Number of Company's officers named as defendants | employee     1    
Subsequent Event [Member] | October 2020 Public Offering          
Subsequent Event [Line Items]          
Gross proceeds from issuance of public offering | $ $ 12.0        
Underwriting discounts, commissions and offering expenses | $ $ 1.4        
Subsequent Event [Member] | October 2020 Public Offering | October 2020 Common warrants          
Subsequent Event [Line Items]          
Warrants to acquire shares of common stock 200,000 2,300,000      
Number of share of common stock per warrant   0.5      
Price per share | $ / shares   $ 3.00      
Exercise price of warrants | $ / shares $ 3.30 $ 3.30      
Percentage on aggregate number of shares of common stock 5.00%        
Percentage of warrants exercisable price on offering price 110.00%        
Subsequent Event [Member] | October 2020 Public Offering | October 2020 Common warrants | Minimum          
Subsequent Event [Line Items]          
Warrants term (in years) 6 months        
Subsequent Event [Member] | October 2020 Public Offering | October 2020 Common warrants | Maximum          
Subsequent Event [Line Items]          
Warrants term (in years) 5 years        
Subsequent Event [Member] | October 2020 Public Offering | Common Stock          
Subsequent Event [Line Items]          
Shares of common stock issued   4,000,000      
Subsequent Event [Member] | Overallotment | October 2020 Common warrants          
Subsequent Event [Line Items]          
Warrants to acquire shares of common stock   300,000