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Summary of Significant Accounting Policies - Schedule of Diluted Net Loss Per Common Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Accounting Policies [Abstract]    
Net loss $ (4,676) $ (7,002)
Dilutive effect of warrant liability (1,323) 0
Net loss allocated to common shares $ (5,999) $ (7,002)
Weighted average common shares outstanding – basic 25,802,700 9,744,577
Dilutive effect of warrant liability 721,220 0
Weighted average common shares outstanding – diluted 26,523,920 9,744,577
Net loss per share – diluted $ (0.23) $ (0.72)