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Note 8 - Goodwill and Patents
3 Months Ended
Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Text Block]
Note 8.  Goodwill and Patents

The Company analyzes its goodwill for impairment annually or at an interim period when events occur or changes in circumstances indicate potential impairment.  The result of the analysis performed in the fourth quarter ended September 30, 2012 did not indicate an impairment of goodwill.  During the quarter ended December 31, 2012, there were no triggering events that indicate potential impairment exists.

The Company capitalizes legal costs incurred to obtain patents. Once accepted by either the U.S. Patent Office or the equivalent office of a foreign country, these legal costs are amortized using the straight-line method over the remaining estimated lives, not exceeding 17 years. As of December 31, 2012 the Company has three patents granted and one pending in the United States and four pending applications pending inside and outside the United States.