Stock-Based Compensation - Summary of Exercise Price Range (Details)	12 Months Ended
Dec. 31, 2020 $ / shares shares
$0.1894
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Prices \| $ / shares	$ 0.1894
Class B Stock Options Outstanding (in shares) \| shares	1,834,028
Weighted- Average Remaining Contractual Life (years)	7 years 3 months 7 days
$0.5960
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Prices \| $ / shares	$ 0.5960
Class B Stock Options Outstanding (in shares) \| shares	50,000
Weighted- Average Remaining Contractual Life (years)	7 years 9 months 25 days
$0.9485
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Prices \| $ / shares	$ 0.9485
Class B Stock Options Outstanding (in shares) \| shares	9,611,633
Weighted- Average Remaining Contractual Life (years)	8 years 11 months 23 days
$2.3564
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Exercise Prices \| $ / shares	$ 2.3564
Class B Stock Options Outstanding (in shares) \| shares	2,419,943
Weighted- Average Remaining Contractual Life (years)	9 years 10 months 20 days

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 number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

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- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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