Significant Customers (Details Narrative) (USD $)	12 Months Ended
Jun. 30, 2012	Jun. 30, 2011
Export sales	$ 5,085,000	$ 4,769,000
Customer Concentration - Domestic
Product sales (percentage)	37.00%	31.00%
Number of customers	1	1
Product sold	military and industrial electronic equipment	military and industrial electronic equipment
Customer location	United States	United States
Customer Concentration - Foreign
Product sales (percentage)	23.00%	31.00%
Number of customers	1	1
Product sold	military and industrial electronic equipment	military and industrial electronic equipment
Customer location	United Kingdom	United Kingdom

Description of risks that arise due to concentrations of operating facilities, revenues, assets, customers, vendors or the like in a certain geographic area, either domestic or foreign. The description may address risks inherent in the geographic area, and, at a minimum, informs users of the general nature of the risk, but excludes "Information about Geographic Areas" that may be disclosed elsewhere (for instance, segment disclosures)..

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Description of risks that arise due to the volume of revenue generated by a particular product or other reliance placed on the success of that product, and the characteristics of that product that may give rise to the risk (for example, a patent or trademark expiration date). At a minimum, the description informs financial statement users of the general nature of the risk.

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