Summary of Significant Accounting Policies (Details - Revenue) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2024	Jul. 31, 2023
Product Information [Line Items]
Total revenues	$ 40,173	$ 37,726
Manufacturing Revenues [Member]
Product Information [Line Items]
Total revenues	33,971	33,420
Process Development Revenues [Member]
Product Information [Line Items]
Total revenues	$ 6,202	$ 4,306