Leases (Details - Supplemental cash flow information) - USD ($) $ in Thousands	9 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 3,136	$ 2,955
Operating cash flows from finance leases	192	96
Financing cash flows from finance leases	561	376
Non-cash transaction
Unpaid finance lease obligation	$ 45	$ 0