INCOME TAXES (Details) (USD $)	12 Months Ended
	Apr. 30, 2014	Apr. 30, 2013
Current:
Federal	$ 100,000	$ 5,000
State	127,000	3,000
Current Income Tax Expense (Benefit), Total	227,000	8,000
Deferred:
Federal	1,327,000	(1,327,000)
State	228,000	(228,000)
Total	1,782,000	(1,547,000)
Reconciliation of the expected income tax provision or benefit at the statutory federal income tax rate to the actual provision or benefit [Abstract]
Expected federal income tax provision	1,658,000	528,000
State taxes, net of federal benefit	31,000	2,000
Permanent differences	12,000	11,000
Change in valuation allowance	71,000	(2,088,000)
Other	10,000	0
Provision for (benefit of) income taxes	1,782,000	(1,547,000)
Deferred tax assets [Abstract]
Net operating loss, general business credit and AMT carryforwards	3,767,000	5,531,000
Deferred revenue	85,000	85,000
Reserves and accruals	1,142,000	1,188,000
Other	95,000	0
Total	5,089,000	6,804,000
Deferred tax liabilities [Abstract]
Other	(26,000)	(52,000)
Net deferred tax assets before valuation allowance	5,063,000	6,752,000
Valuation allowance	(5,063,000)	(5,197,000)
Net deferred taxes	0	1,555,000
Tax Credit Carryforward [Line Items]
Minimum percentage of cumulative change in ownership limits federal credit and net operating loss carryforwards (in hundredths)	50.00%
Period over which cumulative change in ownership limits federal credit and net operating loss carryforwards	3 years
Interest and penalties	0	0
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	9,500,000
Net operating loss carryforwards, expiration dates	Dec. 31, 2020
Federal [Member] | Research and Development Credit Carryforwards [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	284,000
Tax credit carryforwards, expiration date	Dec. 31, 2020
Federal [Member] | Alternative Minimum Tax Credit Carryforward [Member]
Tax Credit Carryforward [Line Items]
Tax credit carryforwards	$ 237,000