Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3.a.u2
STOCK-BASED COMPENSATION AND WARRANTS - Additional information (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 6 Months Ended
Jul. 31, 2019
Nov. 30, 2019
Aug. 31, 2019
Dec. 31, 2019
Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 34,000,000 67,000,000   35,945,000  
Proceeds from Stock Options Exercised       $ 4,300  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value       $ 0.18  
Weighted Average Exercise Price   $ 0.13   $ 0.66 $ 1.60
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, stock options       $ 4,800  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition       2 years 2 months 12 days  
Class of Warrant or Right, Outstanding, Consulting Services       700,000  
Exercise price of stock options   $ 0.29   $ 0.29  
Aggregate fair value before adjusting for forfeitures       $ 2,000  
Class of Warrant or Right, Exercise Price of Warrants or Rights       $ 1.32 $ 1.34
Estimated fair value of stock options $ 817        
Minimal Stock Price For Vesting       0.58  
Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price       $ 0.21  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 33,950,000     52,035,000  
Expected volatility   119.00%   118.00%  
Expected term (years)   5 years   6 years 6 months  
Hybrid Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, stock options       $ 0  
Time-based vesting [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross       24,700,000  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       25.00%  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period     800,000    
Performance Shares [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period     400,000    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period       36 months  
Tranche [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage       75.00%  
2014 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Stock options outstanding terminated       2,200,000  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized       2,185,000  
2015 Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   1,995,000      
Weighted Average Exercise Price   $ 0.29      
Expiration period   10 years      
Estimated fair value of stock options   $ 200      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized       6,850,000  
2015 Plan [Member] | Minimum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   36 months      
2015 Plan [Member] | Maximum          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   48 months      
Employees and Directors | Non Qualified Stock Option Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized 15,000,000        
2016 Plan [Member] | Share-based Payment Arrangement, Employee [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 19,000,000        
2019 Plan [Member] | Share-based Payment Arrangement, Employee [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 15,000,000        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 0.29        
Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price $ 0.21