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Summary of Fair Value of Company's Warrant Liability (Detail) - PIPE Warrants
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Fair value, beginning of period $ 199
Increase in fair value 2,396
Fair value, end of period $ 2,595