Annual report pursuant to Section 13 and 15(d)

FAIR VALUE - Additional Information (Details)

v3.20.1
FAIR VALUE - Additional Information (Details) - shares
Dec. 31, 2019
Aug. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 9,268,352  
August 2014 Public Offering Warrants [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   49,425