Investments - Short-Term (Details) - USD ($) $ in Thousands	Apr. 30, 2024	Oct. 31, 2023
Investments in United States Treasury Securities
Amortized cost	$ 101,340	$ 103,760
Gross unrealized gains		1
Gross unrealized losses	(11)
Fair value	$ 101,329	$ 103,761
U.S. Treasury Securities
Investments in United States Treasury Securities
Weighted average yield to maturity	5.37%	5.45%