Net Income (Loss) Per Common Share (Details - Reconciliation of per share) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Numerator
Net income (loss), basic	$ (9,521)	$ (520)	$ (11,643)	$ 841
Add interest expense on 2026 Notes, net of tax	0	0	0	(944)
Net loss, diluted	$ (9,521)	$ (520)	$ (11,643)	$ (103)
Denominator
Weighted average basic common shares outstanding	63,149	62,204	62,994	62,054
Effect of dilutive securities:
Stock options	0	0	0	1,294
RSUs, PSUs and ESPP	0	0	0	226
2026 Notes	0	0	0	6,776
Weighted average diluted common shares outstanding	63,149	62,204	62,994	70,350
Net income (loss) per share:
Basic	$ (0.15)	$ (0.01)	$ (0.18)	$ 0.01
Diluted	$ (0.15)	$ (0.01)	$ (0.18)	$ (0.00)