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Related Party Transactions (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Biglari Entities
Related Party Transaction [Line Items]
Hurdle rate, percentage	6.00%
Incremental book value	25.00%
Related Party | Biglari Entities
Related Party Transaction [Line Items]
Management fee expense	$ 5,700	$ 4,800

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Amount of expense for investment management fee, including, but not limited to, expense in connection with research, selection, supervision, and custody of investment.

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