Related Party Transactions - Services Agreement and Facilities Sharing Agreement (Details) - Administrative Support Agreement	6 Months Ended
Jun. 30, 2021 USD ($)
Liberty Media Corporation And Subsidiaries
Related Party Transactions
Related party transaction expenses per month	$ 91,666
Independent directors
Related Party Transactions
Annual compensation	$ 75,000

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.

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