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Revenue - Revenue from Forward Contracts (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Derivatives
Net unrealized gains (losses)	$ (2,802)	$ 2,372	$ (10,087)	$ 5,882	$ 8,178	$ 3,581
Forward sales contracts
Derivatives
Net unrealized gains (losses)		(3,300)	7,300	(3,900)	4,800	2,200
Revenue	$ 56,600	$ 42,300	$ 147,000	$ 106,200	$ 145,600	$ 123,800

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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