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Contingent Payments (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023
Sale of Canadian ETF Business [Member] |  |
Contingent Payments [Line Items] |  |
Gain on contingent payment | $ 0 | $ 1,477,000

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