Related party transactions - Related party transactions with affiliated company - Equity Method - Additional Information (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Related Party Transaction [Line Items]
Equity investment	$ 248,235		$ 236,485
Return of capital from equity method investments	$ 279	$ 249
BHD LEON
Related Party Transaction [Line Items]
Ownership interest	15.84%
Equity investment	$ 236,100		$ 225,900
(losses) earnings from investments in equity method investees	29,600	38,000
BHD LEON \| Cash Distribution
Related Party Transaction [Line Items]
Investment Dividends or distribution	19,400	14,100
BHD LEON \| Stock Distribution
Related Party Transaction [Line Items]
Investment Dividends or distribution	$ 2,900	$ 2,100

Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.

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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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