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Outstanding Stock Options and Stock Awards Excluded from Calculation of Net Loss Per Share (Detail) - shares
shares in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Outstanding securities not included in diluted net income (loss) per share calculation:    
Outstanding securities not included in diluted net loss per share calculation 37,165 8,415
Stock Options and Stock Awards    
Outstanding securities not included in diluted net income (loss) per share calculation:    
Outstanding securities not included in diluted net loss per share calculation 15,622 8,415
Convertible Notes    
Outstanding securities not included in diluted net income (loss) per share calculation:    
Outstanding securities not included in diluted net loss per share calculation 21,543 0