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Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Summary of Significant Accounting Policies        
Net loss $ (9,177) $ (5,389) $ (22,581) $ (8,916)
Paid-in-kind dividend on Series C convertible preferred stock (2,000) (2,000) (4,000) (4,196)
Net loss attributable to common stockholders $ (11,177) $ (7,389) $ (26,581) $ (13,112)
Weighted average common shares issued and outstanding - basic 48,792,559 45,757,532 49,467,691 44,786,403
Weighted average common shares issued and outstanding - diluted 48,792,559 45,757,532 49,467,691 44,786,403
Basic net loss per share $ (0.23) $ (0.16) $ (0.54) $ (0.29)
Diluted net loss per share $ (0.23) $ (0.16) $ (0.54) $ (0.29)