Income Taxes income Taxes (Change in Unrecognized Tax Benefits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2025	Apr. 30, 2024
Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	$ 2,892	$ 2,892
Reductions for tax positions of prior years' settlements	(1,286)	0
Balance at end of year	$ 1,606	$ 2,892