Transactions with Related Parties (Narrative) (Details) - Affiliated Entity - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Poseidon
Related Party Transaction [Line Items]
Related party transaction, revenues	$ 3,854	$ 3,193	$ 10,952	$ 10,221
Due from related parties	2,000		2,000		$ 2,400
Related party transaction, costs and expenses	268	242	777	720
Poseidon \| Asset Management Arrangement
Related Party Transaction [Line Items]
Related party transaction, revenues	2,400	2,400	7,300	7,100
ANSAC
Related Party Transaction [Line Items]
Related party transaction, revenues	109,046	61,651	294,556	200,935
Due from related parties	103,582		103,582		$ 64,799
Related party transaction, costs and expenses	$ 2,596	$ 400	$ 5,781	$ 1,097

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

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+ Details

- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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+ Details