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Fair Value Measurement and Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Sep. 30, 2023 | Apr. 08, 2024
Level 1 | Fair Value, Measurements, Recurring |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity securities | $ 471 |  |
Equity securities, gain | $ 422 |  |
Common Stock | Visa B1 |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Common stock, shares held (in shares) |  |  | 2,266
Common Stock | Visa B2 |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Common stock, shares held (in shares) |  |  | 1,133
Common Stock | Visa C |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Common stock, shares held (in shares) |  |  | 449
Rayliant Global Advisors Limited |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity method investment, ownership (percent) |  | 49.99% |
Number of shares (in shares) |  | 349,138 |
Payments to acquire equity method investments |  | $ 95,000 |
Rayliant Global Advisors Limited | Performance-based RSUs | Minimum |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Shares based upon Rayliant’s achievement of specified financial performance conditions (as percentage) |  | 20.00% |
Rayliant Global Advisors Limited | Performance-based RSUs | Maximum |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Shares based upon Rayliant’s achievement of specified financial performance conditions (as percentage) |  | 200.00% |

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