BUSINESS SEGMENTS, GEOGRAPHIC REVENUES, MAJOR CUSTOMERS AND MAJOR VENDORS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Apr. 30, 2013 Segment	Apr. 30, 2012
BUSINESS SEGMENTS, GEOGRAPHIC REVENUES, MAJOR CUSTOMERS AND MAJOR VENDORS [Abstract]
Number of operating segments	2
Segment information [Abstract]
Total revenues	$ 10,571	$ 12,084
Income from operations	1,551	1,252
Depreciation and amortization	181	141
Segment assets	16,834	7,982
Revenues by geographic area [Abstract]
Revenues	10,571	12,084
Supplier Concentration Risk [Member]
Major customers [Abstract]
Number of vendors	5	2
Supplier Concentration Risk [Member] \| Vendor [Member]
Major customers [Abstract]
Concentration risk, percentage (in hundredths)	73.00%	37.00%
Supplier Concentration Risk [Member] \| Vendor One [Member]
Major customers [Abstract]
Concentration risk, percentage (in hundredths)	18.00%	26.00%
Supplier Concentration Risk [Member] \| Vendor Two [Member]
Major customers [Abstract]
Concentration risk, percentage (in hundredths)	18.00%	11.00%
Supplier Concentration Risk [Member] \| Vendor Three [Member]
Major customers [Abstract]
Concentration risk, percentage (in hundredths)	15.00%
Supplier Concentration Risk [Member] \| Vendor Four [Member]
Major customers [Abstract]
Concentration risk, percentage (in hundredths)	12.00%
Supplier Concentration Risk [Member] \| Vendor Five [Member]
Major customers [Abstract]
Concentration risk, percentage (in hundredths)	10.00%
Asia [Member]
Segment information [Abstract]
Total revenues	4,197	6,117
Revenues by geographic area [Abstract]
Revenues	4,197	6,117
North America [Member]
Segment information [Abstract]
Total revenues	3,178	5,320
Revenues by geographic area [Abstract]
Revenues	3,178	5,320
Europe [Member]
Segment information [Abstract]
Total revenues	3,196	647
Revenues by geographic area [Abstract]
Revenues	3,196	647
Gaming Business [Member]
Segment information [Abstract]
Total revenues	7,396	7,052
Income from operations	1,502	973
Depreciation and amortization	112	89
Segment assets	14,886	5,160
Revenues by geographic area [Abstract]
Revenues	7,396	7,052
Gaming Business [Member] \| Revenue [Member] \| Customer Concentration Risk [Member] \| From Unrelated Customers [Member]
Major customers [Abstract]
Number of major customers	1
Concentration risk, percentage (in hundredths)	30.00%
Gaming Business [Member] \| Revenue [Member] \| Customer Concentration Risk [Member] \| From Related Customers [Member]
Major customers [Abstract]
Number of major customers	2	2
Concentration risk, percentage (in hundredths)	38.00%	49.00%
Gaming Business [Member] \| Revenue [Member] \| Customer Concentration Risk [Member] \| Related Customer One [Member]
Major customers [Abstract]
Concentration risk, percentage (in hundredths)	28.00%	32.00%
Gaming Business [Member] \| Revenue [Member] \| Customer Concentration Risk [Member] \| Related Customer Two [Member]
Major customers [Abstract]
Concentration risk, percentage (in hundredths)	10.00%	17.00%
Voting Business [Member]
Segment information [Abstract]
Total revenues	3,175	5,032
Income from operations	49	279
Depreciation and amortization	69	52
Segment assets	1,948	2,822
Revenues by geographic area [Abstract]
Revenues	$ 3,175	$ 5,032
Voting Business [Member] \| Revenue [Member] \| Customer Concentration Risk [Member] \| From Unrelated Customers [Member]
Major customers [Abstract]
Number of major customers	1	1
Concentration risk, percentage (in hundredths)	22.00%	32.00%

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Represents the number of major customers who individually accounted for more than 10% of revenues for the period.

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No definition available.

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- Definition

A company which supplies parts or services to another company also called supplier.

+ References

No definition available.

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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-Name Statement of Financial Accounting Concepts (CON)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

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- Definition

Aggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.

+ References

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