Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY - Additional Information (Details)

v3.20.2
STOCKHOLDERS' EQUITY - Additional Information (Details) - USD ($)
1 Months Ended 2 Months Ended 12 Months Ended
Oct. 09, 2020
Jul. 23, 2019
Jul. 01, 2019
Jun. 19, 2019
Apr. 24, 2019
Jan. 30, 2019
Jan. 07, 2019
Jul. 23, 2019
Dec. 31, 2018
Dec. 31, 2017
Aug. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Apr. 23, 2019
Jan. 18, 2019
Class of Stock [Line Items]                              
Par value                       $ 0.001 $ 0.001    
Designated shares                       20,000,000 20,000,000    
Unpaid principal and accrued interest automatically convert to class of securities issued in an equity financing                       $ 0 $ 5,340,000    
Interest expense                         $ 672,000    
Common stock, shares authorized         500,000,000             500,000,000 500,000,000 200,000,000  
Restricted cash balance                       $ 0      
Share Price                       $ 14.50      
Volume weighted average closing price of common stock                       75.00%      
Gross proceeds from issuance of common stock                       $ 24,050,000 $ 0    
Purchase of Common Stock                       20,000,000      
Early payments obligation                       3,400,000      
Payments of Stock Issuance Costs                       1,500,000 0    
Subsequent Event                              
Class of Stock [Line Items]                              
Stock Issued During Period, Shares, New Issues 2,500,000                            
Net proceeds from private placement $ 37,600,000                            
Accumulated Deficit                              
Class of Stock [Line Items]                              
Stock Issued During Period, Value, New Issues                       0      
Minimum                              
Class of Stock [Line Items]                              
Cash proceeds from equity offering     $ 15,000,000                        
Exclusivity Agreement | Fiscal 2018 Notes holders                              
Class of Stock [Line Items]                              
Unpaid principal and accrued interest automatically convert to class of securities issued in an equity financing                         $ 6,100,000    
Convertible notes, discount rate                         20.00%    
Interest expense                         $ 2,200,000    
Lincoln Park Purchase Agreement [Member]                              
Class of Stock [Line Items]                              
Stock Issued During Period, Value, New Issues                   $ 10,000,000          
Share Price                   $ 20.00          
Other Investors [Member]                              
Class of Stock [Line Items]                              
Stock Issued During Period, Shares, New Issues                     279,000        
Share Price                     $ 14.50        
Gross proceeds from issuance of common stock                     $ 4,100,000        
Other Investors [Member] | Maximum                              
Class of Stock [Line Items]                              
Stock Issued During Period, Value, New Issues       $ 10,000,000                      
Investor [Member]                              
Class of Stock [Line Items]                              
Cash proceeds from equity offering   $ 20,000,000                   $ 20,000,000 $ 25,000,000    
Stock Issued During Period, Shares, New Issues   1,400,000           1,400,000              
Stock Issued During Period, Value, New Issues       $ 20,000,000                      
Share Price   $ 14.50           $ 14.50       $ 14.50      
Percent of advisory fee payable                     6.00%        
Amount of advisory fee payable                     $ 1,500,000        
Percentage of ownership held in company                       62.00%      
Series A Preferred Stock [Member]                              
Class of Stock [Line Items]                              
Rescinded of the previous designation of shares         15,000,000                    
Common Stock | Investor [Member]                              
Class of Stock [Line Items]                              
Converted shares issued         2,300,000                    
Series AA Preferred Stock                              
Class of Stock [Line Items]                              
Converted shares         3,300,000                    
Converted shares issued         3,000,000                    
Convertible Preferred Stock, Shares Issued upon Conversion                       2,971      
Share Price                       $ 0.00      
Series AA Preferred Stock | Fiscal 2018 Notes holders                              
Class of Stock [Line Items]                              
Convertible Preferred Stock, Shares Issued upon Conversion                       698      
Share Price                       $ 10.00      
Series AA Preferred Stock | Exclusivity Agreement                              
Class of Stock [Line Items]                              
Exclusivity payment receipt                 $ 1,500,000            
Designated shares                             5,000,000
Proceeds from Issuance of Preferred Stock and Preference Stock             $ 25,000,000                
Stock Issued During Period, Shares, New Issues           2,500,000                  
Share Price           $ 10.00                  
Gross proceeds from issuance of common stock           $ 25,000,000                  
Gross proceeds from issuance of preferred shares             $ 25,000,000                
Series AA Preferred Stock | Exclusivity Agreement | Fiscal 2018 Notes holders                              
Class of Stock [Line Items]                              
Preferred shares converted           800,000                  
Effective issuance price           $ 8.00                  
Series AA Preferred Stock | Other Investors [Member]                              
Class of Stock [Line Items]                              
Convertible Preferred Stock, Shares Issued upon Conversion                       2,273      
Share Price                       $ 10.00      
Series AA Preferred Stock | Investor [Member]                              
Class of Stock [Line Items]                              
Converted shares         2,500,000                    
Share Price           12.00                  
Series AA Preferred Stock | Investor [Member] | Exclusivity Agreement                              
Class of Stock [Line Items]                              
Purchase price           $ 11.00                  
Fair value of common stock           $ 2,300,000                  
Private Placement [Member]                              
Class of Stock [Line Items]                              
Stock Issued During Period, Shares, New Issues                       262,000      
Gross proceeds from issuance of common stock                       $ 3,800,000      
Private Placement [Member] | Other Investors [Member]                              
Class of Stock [Line Items]                              
Net proceeds from private placement                       $ 22,600,000