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Securities Owned	3 Months Ended
	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Securities Owned	Securities OwnedSecurities owned primarily consist of unencumbered U.S. Treasury bills held for liquidity purposes. Total Securities owned were $37.5 million and $40.8 million as of March 31, 2022 and December 31, 2021, respectively. For additional information, see Note 13—“Fair Value of Financial Assets and Liabilities.”

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