Capitalization of lease liability.

No definition available.

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- Definition

Lessee Operating Lease Commenced Period

+ References

No definition available.

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- Definition

Lessee operating lease lease not yet commenced minimum lease payments.

+ References

No definition available.

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- Definition

Number of renewal option terms.

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No definition available.

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- Definition

Sublease Agreement Term

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Description of lessee's operating lease.

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- Definition

Description of terms and conditions of option to extend lessee's operating lease. Includes, but is not limited to, information about option recognized as part of right-of-use asset and lease liability.

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- Definition

Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Weighted average discount rate for operating lease calculated at point in time.

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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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- Definition

Amount of sublease income excluding finance and operating lease expense.

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Leases - Additional Information (Detail) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
Leases - Additional Information (Detail) $ in Thousands	Mar. 31, 2026 USD ($)	Sep. 30, 2025 USD ($) Term	Sep. 30, 2024 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2025 USD ($) Term	Sep. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	May 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Feb. 29, 2020 USD ($)	Dec. 31, 2018 USD ($)
Lessee Lease Description [Line Items]
Operating lease, description					The Company leases facilities and certain equipment under noncancelable operating leases with remaining lease terms of 0.3 years to 5.7 years, some of which include options to extend for up to two five-year terms.
Operating lease, options to extend					some of which include options to extend for up to two five-year terms.
Weighted average remaining lease term		5 years 4 months 24 days			5 years 4 months 24 days
Weighted average discount rate		4.90%			4.90%
Capitalization of lease liability				$ 19,200						$ 40,300
Restricted cash		$ 9,471	$ 8,770		$ 9,471	$ 8,770	$ 5,770		$ 8,770
Operating sublease income		$ 594	$ 577		$ 1,777	$ 1,247
Corporate Office Space Lease Agreement
Lessee Lease Description [Line Items]
Operating leases arrangement term													10 years 9 months
Corporate Office Space Lease Agreement \| Letter of Credit
Lessee Lease Description [Line Items]
Restricted cash				$ 3,100
California \| Corporate Office Space Lease Agreement
Lessee Lease Description [Line Items]
Minimum lease payment amount											$ 51,400	$ 25,300	$ 50,400
Operating leases arrangement term												10 years 7 months
Lease commencement period				first quarter of 2021
San Diego [Member]
Lessee Lease Description [Line Items]
Sublease Agreement Term							7 years 6 months
NEW JERSEY \| Corporate Office Space Lease Agreement
Lessee Lease Description [Line Items]
Minimum lease payment amount								$ 24,500
Operating leases arrangement term								12 years 2 months
Minimum
Lessee Lease Description [Line Items]
Operating lease remaining lease term		3 months 18 days			3 months 18 days
Minimum \| San Diego [Member]
Lessee Lease Description [Line Items]
Operating sublease income							$ 18,400
Maximum
Lessee Lease Description [Line Items]
Operating lease remaining lease term		5 years 8 months 12 days			5 years 8 months 12 days
Number of renewal option terms \| Term		2			2
Operating lease, renewal term		5 years			5 years
Subsequent Event [Member] \| NEW JERSEY \| Corporate Office Space Lease Agreement
Lessee Lease Description [Line Items]
Lease commencement period	first quarter of 2026
Subsequent Event [Member] \| NEW JERSEY \| Corporate Office Space Lease Agreement \| Letter of Credit
Lessee Lease Description [Line Items]
Restricted cash	$ 600