Warrants - Summarizes The Significant Assumptions Used In Determining The Fair Value Of The Equity Classified Warrants (Detail) - Equity Classified Warrant [member]	Dec. 31, 2020 yr	Dec. 31, 2019 yr
Volatility
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	80
Remaining Term
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	5
Risk Free Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrants and Rights Outstanding, Measurement Input	0.37