Basis of Presentation and Consolidation and Summary of Significant Accounting Policies - Concentrations of customers and suppliers (Details)	12 Months Ended
Dec. 31, 2023 customer item	Dec. 31, 2022 customer item
Concentrations of credit risk
Number of customers \| customer	1	1
Number of sellers in advertising inventory \| item	3	3
Revenue From Contracts With Customer \| Customer Concentration Risk \| One Customer
Concentrations of credit risk
Concentration risk (as a percent)	73.00%	63.00%
Accounts Receivable \| Credit Concentration Risk \| One Customer
Concentrations of credit risk
Concentration risk (as a percent)	83.00%	80.00%
Accounts Payable \| Supplier Concentration Risk \| Three sellers
Concentrations of credit risk
Concentration risk (as a percent)	57.00%	63.00%

Number of customers representing more than 10% of revenue with concentration risk.

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- Definition

The number of sellers accounted for at least 10% of the company's accounts payable, concentration risk.

+ 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 954
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478785/954-310-50-2

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482810/280-10-50-42

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