Stock-Based Compensation - Grants (Details) shares in Thousands	9 Months Ended
Sep. 30, 2024 $ / shares shares
Series A common stock
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period \| shares	23,530
Forfeited/Cancelled \| shares	(3,580)
Outstanding at end of period \| shares	19,950
Exercisable at end of period \| shares	17,755
WAEP
Outstanding at beginning of period \| $ / shares	$ 7.72
Forfeited/Cancelled \| $ / shares	10.24
Outstanding at end of period \| $ / shares	7.27
Exercisable at end of period \| $ / shares	$ 7.11
Additional disclosures
Weighted average remaining life - options outstanding	2 years
Weighted average remaining life - options exercisable	1 year 10 months 24 days
Series B common stock
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of period \| shares	723
Forfeited/Cancelled \| shares	(316)
Outstanding at end of period \| shares	407
Exercisable at end of period \| shares	407
WAEP
Outstanding at beginning of period \| $ / shares	$ 12.35
Forfeited/Cancelled \| $ / shares	11.59
Outstanding at end of period \| $ / shares	12.95
Exercisable at end of period \| $ / shares	$ 12.95
Additional disclosures
Weighted average remaining life - options outstanding	6 months
Weighted average remaining life - options exercisable	6 months

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Number of options outstanding, including both vested and non-vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
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-Name Accounting Standards Codification
-Paragraph 2
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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