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Stock-Based Compensation - Summary of Fair Values of Performance Stock Units Granted and Assumptions used in Monte Carlo Simulation Pricing Model (Detail) - Performance Stock Units [Member]
12 Months Ended
Dec. 31, 2021
$ / shares
2021 Grant  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk-free interest rate 0.40%
Expected volatility 90.00%
Expected term (in years) 3 years
2019 Grant  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Estimated fair values of performance stock units granted $ 7.06
Risk-free interest rate 1.71%
Expected volatility 75.00%
Expected term (in years) 3 years
At Least Twelve Per Share [Member] | 2021 Grant  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Estimated fair values of performance stock units granted $ 2.16
At Least Fifteen Per Share Member | 2021 Grant  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Estimated fair values of performance stock units granted 1.89
At Least Twenty Per Share Member | 2021 Grant  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Estimated fair values of performance stock units granted $ 1.55