Agreements and Transactions with Related Parties - Due from Affiliates (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Related Party Transaction
Due from affiliates	$ 1,191,350	$ 1,080,227
Affiliated Entity
Related Party Transaction
Asset management fees receivable	191	386
Reimbursable costs	122	204
Accounts receivable	69	329
Due from affiliates	$ 382	$ 919

Amount of assets classified as other.

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Amount due from parties in nontrade transactions, classified as other.

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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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Unpaid revenue in the period for (1) performance (incentive) fees based on the investment results achieved for management of certain institutional accounts and hedge funds, (2) schedule-based fees earned for management of mutual funds and closed-end funds, based either on average daily net assets or on a combination of the average daily net assets and gross income, and (3) other investment management and advisory fees.

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The amount of reimbursable costs due from affiliates as of the balance sheet date.

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