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Fair Value of Financial Instruments - Fair Value Derivative Liability (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Derivative Liability, Fair Value, Gross Liability [Roll Forward]    
Balance at beginning of period $ 1,820  
Change in fair value of derivative liability, recorded as other expense (income) (710) $ 80
Balance at end of period $ 1,110