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Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Summary of Significant Accounting Policies    
Net loss $ (13,404) $ (3,527)
Paid-in-kind dividend on Series C convertible preferred stock (2,000) (2,196)
Net loss attributable to common stockholders $ (15,404) $ (5,723)
Weighted average common shares issued and outstanding - basic 49,660,579 43,804,483
Weighted average common shares issued and outstanding - diluted 49,660,579 43,804,483
Basic net loss per share $ (0.31) $ (0.13)
Diluted net loss per share $ (0.31) $ (0.13)