Note 13 - Commitments and Contingencies	12 Months Ended
Sep. 30, 2012
Commitments and Contingencies Disclosure [Text Block]	13. COMMITMENTS AND CONTINGENCIES Legal Matters The Company is the plaintiff in a suit pursuing patent infringement against a competitor in the emissions market. Management believes that it is not currently possible to estimate the impact, if any, that the ultimate resolution of this matter will have on the Company's results of operations, financial position or cash flows. The Company was a named defendant along with numerous other companies in a suit in the State of New York regarding asbestos harm to the plaintiff. The Company was dismissed from the suit in July 2012. The Company is a named defendant along with numerous other companies in a suit in the State of Michigan regarding asbestos harm to the plaintiff. The Company has engaged a Michigan attorney to provide representation. The Company believes the suit is without merit and expects it will be able to obtain a dismissal for similar reasons as the dismissal in the New York action.

Note 13 - Commitments and Contingencies

12 Months Ended

Sep. 30, 2012

Commitments and Contingencies Disclosure [Text Block]

13. COMMITMENTS AND CONTINGENCIES

Legal Matters

The Company is the plaintiff in a suit pursuing patent infringement against a competitor in the emissions market. Management believes that it is not currently possible to estimate the impact, if any, that the ultimate resolution of this matter will have on the Company's results of operations, financial position or cash flows.

The Company was a named defendant along with numerous other companies in a suit in the State of New York regarding asbestos harm to the plaintiff. The Company was dismissed from the suit in July 2012.

The Company is a named defendant along with numerous other companies in a suit in the State of Michigan regarding asbestos harm to the plaintiff. The Company has engaged a Michigan attorney to provide representation. The Company believes the suit is without merit and expects it will be able to obtain a dismissal for similar reasons as the dismissal in the New York action.

- Definition

The entire disclosure for commitments and contingencies.

+ References

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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Reference 7: http://www.xbrl.org/2003/role/presentationRef

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+ Details