Fair value of financial instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash equivalents - money market funds	$ 178,583
Marketable securities	126,449	$ 0
Total Financial Assets	305,032	306,097
Money market funds
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash equivalents - money market funds	153,306	306,097
Commercial paper
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash equivalents - money market funds	19,006
Marketable securities	56,874
U.S. Treasuries
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash equivalents - money market funds	6,271
Marketable securities	9,923
U.S. Government agencies
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Marketable securities	24,065
Corporate bonds
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Marketable securities	35,587
Level 1
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash equivalents - money market funds	153,306
Total Financial Assets	153,306	306,097
Level 1 \| Money market funds
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash equivalents - money market funds	153,306	$ 306,097
Level 2
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash equivalents - money market funds	25,277
Marketable securities	126,449
Total Financial Assets	151,726
Level 2 \| Commercial paper
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash equivalents - money market funds	19,006
Marketable securities	56,874
Level 2 \| U.S. Treasuries
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Cash equivalents - money market funds	6,271
Marketable securities	9,923
Level 2 \| U.S. Government agencies
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Marketable securities	24,065
Level 2 \| Corporate bonds
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Marketable securities	$ 35,587

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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481830/320-10-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479130/326-30-45-1

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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.

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