Note 7 - Product Warranties (Tables)

3 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Product Warranty Liability [Table Text Block]

	Three Months Ended
	December 31,			January 2,
	2016			2016
Accrued liability at beginning of period	$	306,488		$	291,980
Increase in reserve		26,034			42,352
Repairs and replacements		(26,974	)		(47,406	)
Accrued liability at end of period	$	305,548		$	286,926