Note 2 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2014

Accounting Policies [Abstract]

Allowance for Credit Losses on Financing Receivables [Table Text Block]

	2014			2013			2012
Balance October 1	$	89		$	451		$	993
Current year provisions		10,275			8,690			7,564
Expenditures		(10,355	)		(9,052	)		(8,106	)
Balance September 30	$	9		$	89		$	451

Schedule of Inventory, Current [Table Text Block]

	2014		2013
Raw materials and component parts	$	1,066,672	$	852,229
Work-in-process		521,424		590,687
Finished products		126,101		146,900
	$	1,714,197	$	1,589,816

Property, Plant and Equipment [Table Text Block]

Class	Method	Estimated Useful Lives
Buildings	Straight-line	10	-	40	years
Machinery and equipment	Straight-line	3	-	10	years
Tools and dies	Straight-line		3		years