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%