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Fair value of financial instruments and investments - Marketable Securities, Balance Sheet Disclosures (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Marketable securities, Less Than 12 Months	$ 111,442	$ 221,611
Marketable securities, More Than 12 Months	133,378	155,074
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Marketable securities, Less Than 12 Months	27,281	75,279
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Marketable securities, Less Than 12 Months	72,783	131,606
Marketable securities, More Than 12 Months	111,217	136,077
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Marketable securities, Less Than 12 Months	4,100	8,724
Marketable securities, More Than 12 Months	6,072	6,574
Government obligations
Debt Securities, Available-for-sale [Line Items]
Marketable securities, Less Than 12 Months	7,278	6,002
Marketable securities, More Than 12 Months	$ 16,089	$ 12,423

X

- Definition

Amount of available-for-sale debt securities at fair value maturing after the next fiscal year following the latest fiscal year.

+ References

No definition available.

+ Details

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- Definition

Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 3A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123599081&loc=SL120269850-112803

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27198-111563

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563

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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.

+ References

No definition available.

+ Details

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