NOTE PAYABLE - Narrative (Details)
3 Months Ended 9 Months Ended
Jan. 29, 2018
USD ($)
Sep. 30, 2018
USD ($)
$ / shares
Sep. 30, 2018
USD ($)
$ / shares
Sep. 30, 2017
USD ($)
Debt Instrument [Line Items]        
Proceeds from notes payable     $ 3,000,000 $ 0
Amortization of debt discount   $ 900,000 2,060,000 $ 29,174
Note Purchase Agreement and Senior Note Payable        
Debt Instrument [Line Items]        
Note payable, gross $ 4,800,000      
Unamortized discount 1,800,000      
Financing costs 20,000      
Proceeds from notes payable $ 2,980,000      
Debt interest rate 12.50%      
Date of first required payment Mar. 30, 2018      
Debt Instrument, Redemption, Period One | New Note        
Debt Instrument [Line Items]        
Note payable, gross   $ 5,200,000 $ 5,200,000  
Debt interest rate   8.00% 8.00%  
Notes payable   $ 5,200,000 $ 5,200,000  
Redemption price, percentage     125.00%  
Increase in interest rate     18.00%  
Debt Instrument, Redemption, Period Two        
Debt Instrument [Line Items]        
Common stock conversion price adjusted downward | $ / shares     $ 8.02  
Debt Instrument, Redemption, Period Two | New Note        
Debt Instrument [Line Items]        
Redemption price, percentage     120.00%  
Conversion price | $ / shares   $ 3.08 $ 3.08  
Percentage of the VWAP     93.00%  
Debt Instrument, Redemption, Period Three | New Note        
Debt Instrument [Line Items]        
Debt Instrument, Convertible, Stock Price Trigger | $ / shares     $ 10.00  
Consecutive trading days     10  
Threshold trading days     15  
Debt Instrument, Redemption, Period Four | New Note        
Debt Instrument [Line Items]        
Redemption price, percentage     100.00%  
Consecutive trading days     10  
Debt Instrument, Redemption, Period Five | New Note        
Debt Instrument [Line Items]        
Redemption price, percentage     120.00%  
Consecutive trading days     10  
Threshold trading days     25  
Debt Instrument, Redemption, Period Six | New Note        
Debt Instrument [Line Items]        
Redemption price, percentage     120.00%