Equity Compensation Plans (Details - Option activity) - Equity Option [Member] shares in Thousands	3 Months Ended
	Jul. 31, 2024 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Stock options outstanding, beginning balance | shares	1,986
Grant date weighted average exercise price outstanding, beginning balance | $ / shares	$ 6.68
Stock options, granted | shares	0
Grant date weighted average exercise price, granted | $ / shares	$ 0
Stock options, exercised | shares	(15)
Grant date weighted average exercise price, exercised | $ / shares	$ 5.52
Stock options, canceled or expired | shares	(77)
Grant date weighted average exercise price, canceled or expired | $ / shares	$ 12.26
Stock options outstanding, ending balance | shares	1,894
Grant date weighted average exercise price outstanding, ending balance | $ / shares	$ 6.46