Inventories (Details) (USD $)	Sep. 30, 2012	Jun. 30, 2012
Work-in progress	$ 691,627	$ 654,677
Component parts	7,748,422	7,495,333
Finished goods	3,220,677	3,178,507
Reserve for obsolete and excess inventory	(1,319,603)	(1,327,291)
Inventories, net	$ 10,341,123	$ 10,001,226

Certain changes made in the current period to the value and amount of inventory reported.

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Amount before last-in first-out (LIFO) and valuation reserves of merchandise or goods held by the entity that are readily available for sale.

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