Annual report pursuant to Section 13 and 15(d)

SUBSEQUENT EVENTS (Details)

v3.20.2
SUBSEQUENT EVENTS (Details)
$ / shares in Units, shares in Millions, $ in Millions
 1 Months Ended 12 Months Ended
Oct. 09, 2020
USD ($)
$ / shares
shares
Oct. 07, 2020
USD ($)
Sep. 15, 2020
USD ($)
Oct. 31, 2020
USD ($)
Jun. 30, 2020
USD ($)
$ / shares
Jun. 30, 2019
$ / shares
Jun. 30, 2018
$ / shares
Subsequent Event [Line Items]              
Exercise price of warrants | $ / shares         $ 57.46 $ 66.80 $ 68.29
Term of warrants         2 years 3 months 18 days 3 years 4 months 24 days 3 years 4 months 24 days
Reverse stock split ratio   50          
Xoma | License agreement              
Subsequent Event [Line Items]              
Period following stock offering for payment of remaining outstanding balance of license fee, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.         15 days    
Acceleration of the remaining balance due         $ 1.8    
Subsequent Event              
Subsequent Event [Line Items]              
License term (in years)     20 years        
Milestone payments     $ 0.5        
Transfer price (in percent)     70.00%        
Issuance of common stock, net of issuance costs (in shares) | shares 2.5            
Gross proceeds from private placement of equity shares $ 41.0            
Net proceeds from private placement $ 37.6            
Reverse stock split ratio 50            
Aggregate bonus payments approved   $ 0.5          
Subsequent Event | 2021 Financing              
Subsequent Event [Line Items]              
Transaction fees on gross proceeds and out-of-pocket expenses (in percent)     6.00%        
Minimum number of days for happening any other financing     60 days        
Additional transaction fees on gross proceeds (in percent)     6.00%        
Issuance of common stock, net of issuance costs (in shares) | shares 2.5            
Number of shares of common stock called by warrants issued | shares 0.8            
Exercise price of warrants | $ / shares $ 19.50            
Term of warrants 7 years            
Issue price per unit | $ / shares $ 16.50            
Gross proceeds from private placement of equity shares $ 41.0            
Transaction fees 2.5            
Costs for professional fees and other financing costs $ 0.9            
Liquidated damages on gross proceeds (in percent) 6.00%            
Number of warrants issued for shares | shares 0.8            
Percent of advisory fee payable 6.00%            
Subsequent Event | Xoma              
Subsequent Event [Line Items]              
Gross proceeds from private placement of equity shares $ 20.0     $ 41.0