Leases (Details - Supplemental cash flow information) - USD ($) $ in Thousands	6 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 2,149	$ 2,063
Operating cash flows from finance leases	52	65
Financing cash flows from finance leases	$ 262	$ 249