Quarterly report pursuant to Section 13 or 15(d)

SUBSEQUENT EVENTS - Narrative (Details)

v3.21.2
SUBSEQUENT EVENTS - Narrative (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Aug. 12, 2021
USD ($)
$ / shares
shares
Jul. 31, 2021
USD ($)
$ / shares
shares
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2020
USD ($)
Oct. 31, 2020
$ / shares
Sep. 30, 2020
$ / shares
Subsequent Event [Line Items]              
Proceeds from the exercise of warrants | $       $ 8,969 $ 22    
Pre-Funded Warrant              
Subsequent Event [Line Items]              
Exercise price (in usd per share) | $ / shares           $ 0.001 $ 0.001
2020 At Market Issuance Sales Agreement              
Subsequent Event [Line Items]              
Consideration received on transaction | $     $ 6 $ 1,600      
2020 At Market Issuance Sales Agreement | Common Stock              
Subsequent Event [Line Items]              
Number of shares issued in transaction | shares     5,500 1,089,048      
Subsequent Event | July 2021 Offering              
Subsequent Event [Line Items]              
Number of shares issued in transaction | shares   11,290,323          
Closing sale price (in usd per share) | $ / shares   $ 0.62          
Sale of stock, price per share, discounted price (in usd per share) | $ / shares   $ 0.5828          
Sale of stock, price per share, discount percentage   0.060          
Consideration received on transaction | $   $ 7,300          
Subsequent Event | Over-Allotment Option              
Subsequent Event [Line Items]              
Number of shares issued in transaction | shares   1,693,548          
Subsequent Event | Lincoln Park Purchase Agreement              
Subsequent Event [Line Items]              
Number of shares issued in transaction | shares 500,000            
Closing sale price (in usd per share) | $ / shares $ 0.81            
Consideration received on transaction | $ $ 400            
Subsequent Event | 2020 At Market Issuance Sales Agreement | Pre-Funded Warrant              
Subsequent Event [Line Items]              
Stock issuable upon warrants (in shares) | shares 486,352            
Exercise price (in usd per share) | $ / shares $ 0.86            
Proceeds from the exercise of warrants | $ $ 400