Commitments and Contingencies - Additional Information (Details) - Sublease Agreement $ in Millions |
1 Months Ended | 3 Months Ended | |
|---|---|---|---|
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Sep. 30, 2020
USD ($)
ft²
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Mar. 31, 2021
USD ($)
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Dec. 31, 2020
USD ($)
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| Loss Contingencies [Line Items] | |||
| Security deposit | $ 0.9 | $ 0.9 | |
| Five Prime Therapeutics, Inc. (the "Sublessor") | |||
| Loss Contingencies [Line Items] | |||
| Area of Sublease Premises | ft² | 115,466 | ||
| Operating lease, expense | $ 1.1 | $ 1.1 | |
| Lease expiration Date | Dec. 31, 2027 | ||
| Aggregate estimated base rent payments due, sublease | $ 45.5 | ||
| Lease base rent abatement | $ 5.2 | ||
| Initial Premises | Five Prime Therapeutics, Inc. (the "Sublessor") | |||
| Loss Contingencies [Line Items] | |||
| Area of Sublease Premises | ft² | 85,755 | ||
| Expansion Premises | Five Prime Therapeutics, Inc. (the "Sublessor") | |||
| Loss Contingencies [Line Items] | |||
| Area of Sublease Premises | ft² | 29,711 |
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- Definition Lessee operating lease liability of base rent abatement amount. No definition available.
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- Definition Area of a real estate property. No definition available.
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- Definition Date which lease or group of leases is set to expire, in CCYY-MM-DD format. No definition available.
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- Definition Amount of lessee's undiscounted obligation for lease payment for operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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. No definition available.
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- Definition Amount of operating lease expense. Excludes sublease income. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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