Organization and Summary of Significant Accounting Policies - Cash Surrender Value of Life Insurance (Details) $ in Thousands	Apr. 30, 2025 USD ($)	Apr. 30, 2024 USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items]
Cash surrender value of company-owned life insurance policies, net of loans	$ 252,621	$ 218,977
Cash surrender value of life insurance subject to credit risk, percentage	0.60
CSV of COLI Contracts
Organization And Summary Of Significant Accounting Policies [Line Items]
Cash surrender value of company-owned life insurance policies, net of loans	$ 252,600	$ 219,000