Commitments and Contingencies - Schedule of estimated indirect tax liability (Detail) - USD ($) $ in Thousands |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Income Tax Examination [Line Items] | |||
| Balance, beginning of year | $ 921 | $ 680 | $ 662 |
| Additions | 1,040 | ||
| Payments | (162) | ||
| Adjustment to expense | (27) | ||
| Adjustments to existing liabilities | 241 | 18 | |
| Balance, end of year | $ 1,772 | $ 921 | $ 680 |
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- Definition Liability for uncertainty in income taxes, noncurrent, additions. No definition available.
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- Definition Estimated amount of loss resulting from an adverse tax position. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority. No definition available.
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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. No definition available.
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- Definition The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of increase (decrease) to previously recorded tax expense. Includes, but is not limited to, significant settlements of income tax disputes, and unusual tax positions or infrequent actions taken by the entity, including tax assessment reversal, and IRS tax settlement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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