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v3.21.2

Summary of significant accounting policies - Stock-based compensation (Details) - USD ($) $ in Millions | Sep. 30, 2021 | Dec. 31, 2020
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Other long-term liabilities | Restricted Stock Units |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Amount of restricted common stock liability | $ 0.7 | $ 0.0

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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). + References No definition available. + 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. + Details
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- Details
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- Details
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