Quarterly report pursuant to Section 13 or 15(d)

MANAGEMENT???S LIQUIDITY PLANS (Details)

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MANAGEMENT’S LIQUIDITY PLANS (Details) - USD ($)
$ in Thousands
1 Months Ended 6 Months Ended
Aug. 28, 2020
Aug. 11, 2021
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
MANAGEMENT’S LIQUIDITY PLANS (Details) [Line Items]            
Working Capital (Deficit)     $ 13,600      
Proceeds from Sale of Equity Method Investments   $ 9,100        
At the Market Offering $ 45,000   116,000      
Cash and Cash Equivalents, at Carrying Value     15,504 $ 28,268 $ 36,927 $ 12,108
Series E Preferred Stock [Member]            
MANAGEMENT’S LIQUIDITY PLANS (Details) [Line Items]            
Proceeds from Sale of Equity Method Investments     $ 1,300