Equity Compensation Plans (Details - Option activity) - Equity Option [Member] shares in Thousands	3 Months Ended
	Jul. 31, 2023 $ / shares shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of options outstanding, beginning | shares	2,079
Weighted average exercise price outstanding, beginning | $ / shares	$ 6.76
Number of options, granted | shares	0
Weighted average exercise price, granted | $ / shares	$ 0
Number of options, exercised | shares	(41)
Weighted average exercise price, exercised | $ / shares	$ 8.46
Number of options, cancelled or expired | shares	(8)
Weighted average exercise price, canceled or expired | $ / shares	$ 13.15
Number of options outstanding,ending | shares	2,030
Weighted average exercise price outstanding, ending | $ / shares	$ 6.70