Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Additional Information (Details)

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STOCK-BASED COMPENSATION - Additional Information (Details) - USD ($)
1 Months Ended 3 Months Ended
Sep. 05, 2018
Jul. 19, 2018
Feb. 03, 2017
Jun. 18, 2013
Dec. 31, 2019
Dec. 31, 2018
Oct. 01, 2019
Sep. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected volatility rate, minimum         79.69%      
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected volatility rate, maximum         119.44%      
Share-based compensation arrangement by share-based payment award, fair value assumptions, risk free interest rate, minimum         1.47%      
Share-based compensation arrangement by share-based payment award, fair value assumptions, risk free interest rate, maximum         3.23%      
Share based compensation arrangement by share based payment award fair value assumptions expected forfeiture rate         0.00%      
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected dividend rate         0.00%      
Share-based compensation arrangement by share-based payment award, fair value assumptions, expected term         5 years 9 months      
Common Stock, Shares Authorized         300,000,000     300,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         3,120,000      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares         14,372,203      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage         100.00%      
Proceeds from Stock Options Exercised         $ 0 $ 32,400    
Non-Employee Restricted Shares [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Allocated share-based compensation expense         40,000 205,000    
Research and Development Expense [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Allocated share-based compensation expense         76,000 66,000    
General and Administrative Expense [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Allocated share-based compensation expense         83,000 273,000    
General and Administrative Expense [Member] | Restricted Stock [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Allocated share-based compensation expense         $ 0 0    
Employees And Directors [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         19,064,212      
Consultants [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         7,577,500      
Consultants [Member] | Restricted Stock [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted 100,000              
Employees, Directors And Consultants [Member] | Research and Development Expense [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Allocated share-based compensation expense         $ 159,000 $ 339,000    
2013 Stock Incentive Plan                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Increase In Aggregate Number Of Shares             3,000,000  
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition         2 years 2 months 12 days      
Common Stock, Shares Authorized             28,114,256 25,114,256
Share-based compensation arrangement by share-based payment award, number of additional shares authorized       3,000,000        
Stock Issued During Period, Shares, New Issues           477,269    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross         0 87,567    
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period         0 1,437,433    
Proceeds from Stock Options Exercised           $ 32,400    
2013 Stock Incentive Plan | Restricted Stock [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation arrangement by share-based payment award, award vesting period 90 days              
2013 Stock Incentive Plan | Restricted Stock [Member] | Share-based Compensation Award, Tranche One [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares 50,000              
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 100.00% 100.00% 100.00%          
2013 Stock Incentive Plan | Restricted Stock [Member] | Share-based Compensation Award, Tranche Two [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares 50,000              
Plan 2013 [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation arrangement by share-based payment award, number of shares available for grant         4,560,930      
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, total         $ 711,000      
Plan 2013 [Member] | Employees And Directors [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         2,570,000      
Plan 2013 [Member] | Consultants [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         550,000      
Plan 2013 [Member] | Consultants [Member] | Restricted Stock [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Other   220,000            
Plan 2013 [Member] | Board of Directors And Management [Member] | Restricted Stock [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted   745,000 1,750,000