Quarterly report pursuant to Section 13 or 15(d)

Net Loss per Share - Additional Information (Details)

v3.21.1
Net Loss per Share - Additional Information (Details) - USD ($)
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Dec. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Net Loss Attributable to Non-controlling Interest $ (1,000) $ (26,000)  
Series A Preferred Stock [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Accretion of Preferred Stock Deemed Dividend 7,400,000    
Accretion of preferred discount     $ 6,900,000
preferred stock accrued dividends 24,000 62,000  
Series B Preferred Stock [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Net Loss Attributable to Non-controlling Interest 0 0  
Accretion of preferred discount 1,500,000 404,000  
Accretion of preferred discount 1,500,000 400,000  
preferred stock accrued dividends $ 1,497,000 $ 404,000  
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount   5,708,696  
Equity Option [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 3,997,418 2,502,012  
Warrant [Member]      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 6,344,966 18,714,999