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Securities Owned- Schedule of Securities Owned (Detail) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Securities Owned [Line Items] |  |
Securities Owned Total | $ 119,390 | $ 34,895
Trading Securities [Member] |  |
Securities Owned [Line Items] |  |
Securities Owned Total | $ 119,390 | $ 34,895

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- Definition Fair value of financial instruments held by a broker-dealer for their own account (proprietary securities) for trading or investment purposes determined by management based upon quoted prices of a financial instrument with similar characteristics or on a valuation technique or model. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
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- Definition Securities Owned. + References No definition available. + Details
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- Details
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