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Net Loss Per Share Attributable to Common Stockholders - Narrative (Details)	Sep. 30, 2021 vote	May 31, 2019 vote
Common Class A
Class of Stock [Line Items]
Common stock, voting rights (votes per share)	1	1
Common Class B
Class of Stock [Line Items]
Common stock, voting rights (votes per share)	10	10
Common Class B | Conversion Of Class B Common Stock To Class A Common Stock
Class of Stock [Line Items]
Common stock, conversion ratio	1

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- Definition

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- Definition

Common Stock, Voting Rights, Number of Votes Allowed To Each Share

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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

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