Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events (Details)

v3.20.1
Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended
Apr. 16, 2020
Jul. 24, 2019
May 11, 2020
Mar. 31, 2020
Dec. 31, 2019
Subsequent Event          
Shares outstanding (in shares)       53,227,700 45,727,700
At Market Issuance Sales Agreement          
Subsequent Event          
Maximum aggregate offering price   $ 15,000      
Subsequent Event          
Subsequent Event          
Shares outstanding (in shares) 60,403,164        
Warrants exercised (in shares)     4,500    
Gross proceeds from warrant exercises     $ 5    
Options issued (in shares)     20,000    
Option exercise price (in dollars per share)     $ 1.47    
Options vesting period     10 years    
Subsequent Event | 2015 Stock Plan          
Subsequent Event          
Options issued (in shares)     25,000    
Option exercise price (in dollars per share)     $ 1.26    
Options term period     5 years    
Options vesting period     1 year    
Subsequent Event | Equity Warrants Issued to Consultant, Contingent Vesting Conditions          
Subsequent Event          
Shares purchased from issuance of warrants (in shares)     100,000    
Exercise price for shares purchased from issuance of warrants (in dollars per share)     $ 1.08    
Subsequent Event | At Market Issuance Sales Agreement          
Subsequent Event          
Number of shares sold (in shares) 7,170,964        
Shares sold (in dollars per share) $ 1.44        
Net proceeds from stock offering $ 10,000        
Commissions paid, percentage of gross proceeds 3.00%