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Fair Value of Financial Instruments - Additional Information (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Letter Agreement Warrants [Member]    
Fair Value Of Assets And Liabilities Measured On Recurring Basis [Line Items]    
Change in fair value of agreement warrants loss (gain) $ 1.6 $ (0.4)