Organization and Summary of Significant Accounting Policies - Impairment of Long-Lived Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2022
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of right-of-use assets	$ 1,629	$ 5,471	$ 7,392
Impairment of fixed assets	1,575	4,375	1,915
Right-Of-Use Assets
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of right-of-use assets	1,600	5,500	7,400
Leasehold Improvements and Furniture and Fixtures
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of fixed assets	100	$ 4,400	$ 1,900
Software and Software Development Costs
Impaired Long-Lived Assets Held and Used [Line Items]
Impairment of fixed assets	$ 1,500