Additional Area of New Office Building

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- Definition

Area of new office building.

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- Definition

Area of office.

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- Definition

Area of operating lease.

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- Definition

Lessee, Finance Lease, Payment Upon Contract Termination

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- Definition

Number Of Lessees, Unaffiliated Company

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- Definition

Number of options to extend lease.

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No definition available.

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- Definition

Number Of Properties To Be Subleased

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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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Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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- Definition

Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

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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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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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Commitments and Contingencies - Additional Information (Details) $ in Millions	1 Months Ended				2 Months Ended	3 Months Ended
	Feb. 28, 2026 ft²	Jul. 31, 2025 property company	Feb. 28, 2023 ft²	Feb. 28, 2019 ft² renewal	Jan. 31, 2025 ft² company	Mar. 31, 2026 USD ($)	Mar. 31, 2025 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2021 ft²	Jul. 31, 2020 USD ($)	Oct. 31, 2018 ft²	Aug. 31, 2018 ft²
Operating Leased Assets [Line Items]
Letter of credit \| $						$ 6.0		$ 6.0
Weighted average discount rate, percent						6.50%
Weighted average remaining lease term (in years)						6 years 11 months 8 days
Sublease income \| $						$ 0.8	$ 0.3
Agreement term (in years)										20 years
Termination payment \| $										$ 4.3
Letter of Credit
Operating Leased Assets [Line Items]
Letter of credit \| $						$ 4.3		$ 4.3
Bellco \| Sublease Agreement \| Related Party
Operating Leased Assets [Line Items]
Area of office space (in square feet)	1,944		2,218
Sublease, term of contract (in years)			115 months
Newark, California
Operating Leased Assets [Line Items]
Operating lease, extended term (in years)				10 years
Area of operating lease (in square feet)				118,000
Number of options to extend lease \| renewal				2
South San Francisco, California
Operating Leased Assets [Line Items]
Area of lease (in square feet)											14,943	68,000
Additional area of lease (in square feet)									47,566
Operating lease, extended term (in years)									8 years		8 years
HQ Lease
Operating Leased Assets [Line Items]
Area of office space (in square feet)					46,011
Number of unaffiliated company lessees \| company					2
South San Francisco Building Two
Operating Leased Assets [Line Items]
Number of unaffiliated company lessees \| company		1
Number of properties to be subleased \| property		1