XML 51 R39.htm IDEA: XBRL DOCUMENT
v3.21.2

Fair Value Measurements - Recurring Fair Value Measurements (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Assets |  |
Marketable securities | $ 408,954 | $ 149,903
Other liabilities |  |
Redeemable convertible preferred stock warrant liabilities | 0 | 2,517
Fair Value, Measurements, Recurring |  |
Assets |  |
Total assets | 1,636,591 | 353,495
Other liabilities |  |
Total liabilities |  | 2,517
Fair Value, Measurements, Recurring | Redeemable convertible preferred stock warrants |  |
Other liabilities |  |
Redeemable convertible preferred stock warrant liabilities |  | 2,517
Fair Value, Measurements, Recurring | Money market funds |  |
Assets |  |
Money market funds | 1,227,637 | 203,592
Fair Value, Measurements, Recurring | U.S. government securities |  |
Assets |  |
Marketable securities | 374,593 | 125,864
Fair Value, Measurements, Recurring | Commercial paper |  |
Assets |  |
Marketable securities | 16,880 | 4,991
Fair Value, Measurements, Recurring | Asset-backed securities |  |
Assets |  |
Marketable securities | 2,017 | 4,315
Fair Value, Measurements, Recurring | Corporate debt securities |  |
Assets |  |
Marketable securities | 15,464 | 14,733
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 |  |
Assets |  |
Total assets | 1,602,230 | 329,456
Other liabilities |  |
Total liabilities |  | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Redeemable convertible preferred stock warrants |  |
Other liabilities |  |
Redeemable convertible preferred stock warrant liabilities |  | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Money market funds |  |
Assets |  |
Money market funds | 1,227,637 | 203,592
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | U.S. government securities |  |
Assets |  |
Marketable securities | 374,593 | 125,864
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Commercial paper |  |
Assets |  |
Marketable securities | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Asset-backed securities |  |
Assets |  |
Marketable securities | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 | Corporate debt securities |  |
Assets |  |
Marketable securities | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 |  |
Assets |  |
Total assets | 34,361 | 24,039
Other liabilities |  |
Total liabilities |  | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Redeemable convertible preferred stock warrants |  |
Other liabilities |  |
Redeemable convertible preferred stock warrant liabilities |  | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Money market funds |  |
Assets |  |
Money market funds | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | U.S. government securities |  |
Assets |  |
Marketable securities | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Commercial paper |  |
Assets |  |
Marketable securities | 16,880 | 4,991
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Asset-backed securities |  |
Assets |  |
Marketable securities | 2,017 | 4,315
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 | Corporate debt securities |  |
Assets |  |
Marketable securities | 15,464 | 14,733
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 |  |
Assets |  |
Total assets | 0 | 0
Other liabilities |  |
Total liabilities |  | 2,517
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Redeemable convertible preferred stock warrants |  |
Other liabilities |  |
Redeemable convertible preferred stock warrant liabilities |  | 2,517
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Money market funds |  |
Assets |  |
Money market funds | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | U.S. government securities |  |
Assets |  |
Marketable securities | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Commercial paper |  |
Assets |  |
Marketable securities | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Asset-backed securities |  |
Assets |  |
Marketable securities | 0 | 0
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 | Corporate debt securities |  |
Assets |  |
Marketable securities | $ 0 | $ 0

X
- References No definition available. + Details
Name: | us-gaap_AssetsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_LiabilitiesFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. + References No definition available. + Details
Name: | us-gaap_WarrantsAndRightsOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=us-gaap_WarrantMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_USGovernmentCorporationsAndAgenciesSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_CommercialPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |