Net Loss Per Share - Basic and Diluted Net Loss Per Share (Parenthetical) (Detail) - shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Anti-dilutive securities excluded from computation of net loss per share	11,200,000	9,700,000	9,000,000.0
2024 Convertible Notes [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Conversion of shares excluded from computation of diluted EPS	5,712,253	7,763,970	7,763,970
2027 Convertible Notes [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Conversion of shares excluded from computation of diluted EPS	8,100,485