Convertible Senior Notes - Narrative (Detail) - USD ($) $ in Thousands	Jul. 30, 2022	Jan. 29, 2022	Sep. 30, 2019	Jun. 30, 2018
2024 Notes
Debt Instrument
Debt instrument, principal amount			$ 350,000
Debt instrument, interest rate			0.00%
2023 Notes
Debt Instrument
Debt instrument, principal amount	$ 9,400			$ 335,000
Debt instrument, interest rate				0.00%
Private Offering
Debt Instrument
Debt outstanding	43,372	$ 256,452
Private Offering | 2024 Notes
Debt Instrument
Debt outstanding	41,668	188,061
Private Offering | 2023 Notes
Debt Instrument
Debt instrument, principal amount				$ 300,000
Debt outstanding	$ 1,704	$ 68,391
Overallotment option | 2023 Notes
Debt Instrument
Debt outstanding				$ 35,000