CONVERTIBLE SENIOR NOTES - Notes Due 2024 (Detail)	1 Months Ended	12 Months Ended
	Sep. 30, 2024 USD ($)	Feb. 01, 2025 USD ($) $ / shares shares	Feb. 03, 2024 USD ($) D $ / shares	Jan. 28, 2023 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)
Debt Instrument
Debt amount settled in cash		$ 41,904,000	$ 1,696,000	$ 13,064,000
Common stock, par value | $ / shares		$ 0.0001	$ 0.0001
Additional paid-in capital		$ 362,348,000	$ 287,806,000
Private Placement
Debt Instrument
Debt instrument, principal amount						$ 300,000,000
Long term debt		$ 0
2024 Notes
Debt Instrument
Shares issued upon conversion | shares		39,121
Debt instrument, convertible earliest date			Jun. 15, 2024
Debt Instrument, Convertible, Settlement Method [Extensible Enumeration]	us-gaap:CashSettlementMember	us-gaap:ShareSettlementMember
Common stock, par value | $ / shares		$ 0.0001
Additional paid-in capital		$ 0
2024 Notes | Private Placement
Debt Instrument
Debt amount settled in cash	$ 42,000,000
Debt instrument, principal amount			$ 350,000,000		$ 350,000,000
Debt instrument, interest rate			0.00%		0.00%
Long term debt		$ 0	$ 42,000,000
2024 Notes | Circumstances (1)
Debt Instrument
Debt instrument, convertible trading days | D			20
Debt instrument, convertible consecutive trading days | D			30
Debt instrument, convertible percentage of stock price			130.00%
2024 Notes | Circumstances (2)
Debt Instrument
Debt instrument, convertible trading days | D			5
Debt instrument, convertible consecutive trading days | D			10
Debt instrument, convertible percentage of stock price			98.00%
Debt instrument, conversion principal amount			$ 1,000