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Stock-based compensation - Stock Based Compensation Expense by Award Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Stock options
Stock-based compensation expense included in total operating expenses	$ 5,375	$ 4,928	$ 16,208	$ 13,549
Stock options
Stock options
Stock-based compensation expense included in total operating expenses	3,901	3,986	11,952	10,617
Restricted stock units
Stock options
Stock-based compensation expense included in total operating expenses	1,365	881	3,832	2,636
Employee stock purchase plan
Stock options
Stock-based compensation expense included in total operating expenses	$ 109	$ 61	$ 424	$ 296

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

+ Details

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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.

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