8. EQUITY COMPENSATION PLANS (Details Narrative) (USD $)	6 Months Ended
	Oct. 31, 2013
Unrecognized compensation cost related to non-vested stock options	$ 6,749,000
Period for expense recognition	1 year 3 months 14 days
Shares reserved for issuance under all stock incentive plans	29,858,569
Shares purchased under ESPP	261,782
Stock Incentive Plans
Shares reserved for issuance under all stock incentive plans	26,306,989
Stock Options
Shares reserved for issuance under all stock incentive plans	18,451,688
Share-based Awards
Shares reserved for issuance under all stock incentive plans	7,855,301