Quarterly report pursuant to Section 13 or 15(d)

Net Income (Loss) per Common Share (Schedule of Diluted Weighted Average Shares Outstanding) (Details)

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Net Income (Loss) per Common Share (Schedule of Diluted Weighted Average Shares Outstanding) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Effect of Series A preferred dividends on net loss per share calculation $ 2.0 $ 2.0 $ 4.0 $ 4.0
Effect of partner company deemed dividends on net loss per share calculation $ 0.4 $ 0.1 $ 0.8 $ 0.3
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding     7,482,640 1,537,908
Warrants to purchase Common Stock        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding     5,769,787 127,296
Employee Stock Option        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding     18,896 36,423
Unvested Restricted Stock        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding     1,693,684 1,374,116
Unvested Restricted Stock Units        
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Potentially dilutive securities excluded from the computations of diluted weighted average shares outstanding     273 73