SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Description of the Business [Abstract]
Lead time of deposit upon contract signing before delivery of hardware begins, maximum	6 months
Outstanding voting stock held by Berjaya Lottery Management (H.K.) Ltd. (in hundredths)	71.30%
Revenue Recognition for Arrangements with Multiple Deliverables [Abstract]
Period of service of software licenses	1 year
Deferred Revenues and Deferred Cost of Revenues [Abstract]
Deferred revenues	$ 5,451,000	$ 687,000
Deferred cost of revenue	132,000	6,000
Allowance for Doubtful Accounts [Abstract]
Allowance for doubtful accounts	75,000	75,000
Product warranty reserve activity [Roll Forward]
Balance, beginning of period	169,000	31,000
Additional reserves	153,000	159,000
Charges incurred	(183,000)	(21,000)
Balance, end of period	139,000	169,000
Summary of inventories [Abstract]
Raw materials and subassemblies	2,872,000	1,775,000
Work-in-process	33,000	63,000
Finished Goods	760,000	821,000
Total	3,665,000	2,659,000
Net equipment, furniture and fixtures [Abstract]
Gross equipment, furniture and fixtures	2,741,000	2,487,000
Accumulated depreciation and amortization	(2,168,000)	(2,005,000)
Net equipment, furniture and fixtures	573,000	482,000
Plant and Machinery [Member]
Net equipment, furniture and fixtures [Abstract]
Gross equipment, furniture and fixtures	757,000	724,000
Computer Equipment [Member]
Net equipment, furniture and fixtures [Abstract]
Gross equipment, furniture and fixtures	1,662,000	1,482,000
Leasehold Improvement [Member]
Net equipment, furniture and fixtures [Abstract]
Gross equipment, furniture and fixtures	201,000	190,000
Furniture, Fixtures and Equipment [Member]
Net equipment, furniture and fixtures [Abstract]
Gross equipment, furniture and fixtures	96,000	91,000
Construction in Progress [Member]
Net equipment, furniture and fixtures [Abstract]
Gross equipment, furniture and fixtures	$ 25,000	$ 0
Minimum [Member]
Property, Plant and Equipment [Line Items]
Equipment, furniture and fixtures, estimated useful lives	P3Y
Maximum [Member]
Property, Plant and Equipment [Line Items]
Equipment, furniture and fixtures, estimated useful lives	P7Y
Hardware [Member] | Minimum [Member]
Product Information [Line Items]
Product warranty period	6 months
Hardware [Member] | Maximum [Member]
Product Information [Line Items]
Product warranty period	12 months
Software [Member] | Minimum [Member]
Product Information [Line Items]
Product warranty period	6 months
Software [Member] | Maximum [Member]
Product Information [Line Items]
Product warranty period	12 months
Spares [Member]
Product Information [Line Items]
Product warranty period	90 days