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Derivative Liabilities - Schedule of Changes in Level 3 Liabilities Measured at Fair Value (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Derivative Liability [Abstract]  
Derivative Liabilities, beginning balance $ 2,471
New issuances 1,692
Change in fair value of derivative liability 1,947
Exercises/redemptions (3,169)
Derivative Liabilities, ending balance $ 2,942