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Stock Incentive Plans and Stock-Based Compensation - Assumptions Used to Estimate Fair Value of Share-Based Payment Awards (Detail)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Payment Arrangement [Abstract]      
Risk free interest rate, minimum 0.53% 0.33% 1.55%
Risk free interest rate, maximum 1.36% 1.74% 2.95%
Expected dividend yield 0.00% 0.00% 0.00%
Expected option life (years) 6 years 3 months 6 years 3 months 6 years 3 months
Expected volatility, minimum 96.00% 84.00% 92.00%
Expected volatility, maximum 99.00% 99.00% 94.00%