Annual report pursuant to Section 13 and 15(d)

STOCK-BASED COMPENSATION AND WARRANTS - Additional information (Details)

v3.19.2
STOCK-BASED COMPENSATION AND WARRANTS - Additional information (Details) - USD ($)
1 Months Ended 12 Months Ended
Jul. 31, 2019
Jun. 30, 2019
Jun. 30, 2018
Apr. 24, 2019
Apr. 23, 2019
Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock subject to currently outstanding stock options   13,865 19,415     21,291
Shares granted   1,125 255      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   1,125 255      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   $ 445,000 $ 207,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value   $ 0.40 $ 0.81      
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, stock options   $ 2,700,000        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition   1 year 9 months 18 days        
Class of Warrant or Right, Outstanding, Consulting Services   0 650      
Modification for Debt Discount to Former Member of Board of Directors: Cancelled Warrant, Shares   (500) 0      
Class of Warrant or Right, Exercise Price of Warrants or Rights   $ 1.34 $ 1.37     $ 1.71
Class of Warrant or Right, Fair Value Difference, Modified Warrant and Cancelled Warrant   $ 138,000        
2014 Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock options outstanding terminated   2,190,000        
2015 Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock are authorized for awards that may be granted   6,850,000        
Common stock remain available for future grants   4,155,000        
Common stock subject to currently outstanding stock options   2,695,000        
2016 Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common stock are authorized for awards that may be granted       28,000,000 15,000,000  
Common stock remain available for future grants   19,020,000        
Common stock subject to currently outstanding stock options   8,980,000        
Employee Stock Option [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares granted 34,000,000          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 34,000,000          
Expected volatility   84.00% 84.00%      
Risk free interest rate   2.80% 2.10%      
Warrant term (years)   7 years 7 years      
Warrant            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Class of Warrant or Rights, Weighted Average Grant Date Fair Value   $ 0.23 $ 0.58      
Expected volatility   100.00% 86.00%      
Risk free interest rate   2.50% 2.80%      
Warrant term (years)   4 years 10 years      
Discount rate     20.00%      
Warrants, Consulting Services [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Class of Warrant or Rights, Fair Value of Warrants     $ 500,000      
Class of Warrant or Rights, Weighted Average Grant Date Fair Value     $ 1.07      
Expected volatility     82.00%      
Risk free interest rate     2.10%      
Warrant term (years)     6 years 6 months      
Warrants, Debt Discount [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Class of Warrant or Rights, Fair Value of Warrants     $ 3,800,000      
Class of Warrant or Rights, Weighted Average Grant Date Fair Value     $ 0.45      
Expected volatility     96.00%      
Risk free interest rate     2.80%      
Warrant term (years)     5 years