Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Assets:
Marketable securities (current)	$ 392,990	$ 372,670
Marketable securities (non-current)		52,269
Recurring [Member]
Assets:
Total Assets	533,058	622,157
Liabilities:
Total Liabilities	54,410	33,540
Recurring [Member] \| Money Market Funds [Member]
Assets:
Cash equivalents, fair value	133,202	153,589
Recurring [Member] \| US Treasury and Government [Member]
Assets:
Marketable securities (current)	211,135	171,063
Marketable securities (non-current)		52,269
Recurring [Member] \| Corporate Debt Securities [Member]
Assets:
Cash equivalents, fair value		1,431
Marketable securities (current)	8,958	20,452
Recurring [Member] \| Commercial Paper [Member]
Assets:
Cash equivalents, fair value	4,999	37,998
Marketable securities (current)	172,897	181,155
Recurring [Member] \| Restricted Cash [Member]
Assets:
Total Assets	1,867	4,200
Recurring [Member] \| Financing Liability, Related Party [Member]
Liabilities:
Total Liabilities	27,205	16,770
Recurring [Member] \| Financing Liability [Member]
Liabilities:
Total Liabilities	27,205	16,770
Recurring [Member] \| Quoted Prices in Active Markets (Level 1) [Member]
Assets:
Total Assets	346,204	381,121
Recurring [Member] \| Quoted Prices in Active Markets (Level 1) [Member] \| Money Market Funds [Member]
Assets:
Cash equivalents, fair value	133,202	153,589
Recurring [Member] \| Quoted Prices in Active Markets (Level 1) [Member] \| US Treasury and Government [Member]
Assets:
Marketable securities (current)	211,135	171,063
Marketable securities (non-current)		52,269
Recurring [Member] \| Quoted Prices in Active Markets (Level 1) [Member] \| Restricted Cash [Member]
Assets:
Total Assets	1,867	4,200
Recurring [Member] \| Significant Other Observable Inputs (Level 2) [Member]
Assets:
Total Assets	186,854	241,036
Recurring [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Corporate Debt Securities [Member]
Assets:
Cash equivalents, fair value		1,431
Marketable securities (current)	8,958	20,452
Recurring [Member] \| Significant Other Observable Inputs (Level 2) [Member] \| Commercial Paper [Member]
Assets:
Cash equivalents, fair value	4,999	37,998
Marketable securities (current)	172,897	181,155
Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Liabilities:
Total Liabilities	54,410	33,540
Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Financing Liability, Related Party [Member]
Liabilities:
Total Liabilities	27,205	16,770
Recurring [Member] \| Significant Unobservable Inputs (Level 3) [Member] \| Financing Liability [Member]
Liabilities:
Total Liabilities	$ 27,205	$ 16,770

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
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-URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

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Fair value of financial and nonfinancial obligations.

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