Net Loss Per Share - Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Earnings Per Share [Abstract]
Net Income (Loss)		$ (23,940)	$ (516,755)	$ (231,481)	$ (105,025)	$ (540,695)	$ (336,506)
Weighted-average common shares outstanding - basic		88,743,000		87,511,000		88,466,000	87,383,000
Effect of dilutive securities*	[1]	0		0		0	0
Weighted-average common shares outstanding - diluted		88,743,000		87,511,000		88,466,000	87,383,000
Net loss per share - basic		$ (0.27)		$ (2.65)		$ (6.11)	$ (3.85)
Net loss per share - diluted		$ (0.27)		$ (2.65)		$ (6.11)	$ (3.85)

[1] For the three and six months ended June 30, 2023 and 2022, stock options, RSUs and employee stock purchase plan to purchase of approximately 12.3 million and 11.3 million shares of common stock, respectively, were excluded from the diluted net loss per share calculation as their effect would have been anti-dilutive. The Company accounts for the effect of its 2027 Notes and 2024 Notes on diluted net earnings per share (“EPS”) using the if-converted method as this obligation may be settled in cash or shares at the Company’s option. The effect of potential share settlement is included in the diluted EPS calculation if the effect is more dilutive. During the three and six months ended June 30, 2023, the inclusion of the potential share settlement of the 2027 Notes was anti-dilutive. During the three and six months ended June 30, 2023 and 2022 the inclusion of the potential share settlement of the 2024 Notes was anti-dilutive. Accordingly, the potential conversion of approximately 1.4 million and 7.8 million shares related to the 2024 Notes has been excluded from the computation of diluted net loss per share for the three and six months ended June 30, 2023 and 2022, respectively, and the potential conversion of approximately 8.1 million shares related to the 2027 Notes has been excluded from the computation of diluted net loss per share for the three and six months ended June 30, 2023.