Note 5 - Summary of Share-based Compensation Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 29, 2018	Dec. 30, 2017
Share-based compensation expense	$ 698	$ 816
The above compensation is net of tax benefits	274	137
Employee Stock Option [Member]
Share-based compensation expense	629	615
Stock Purchase Plan [Member]
Share-based compensation expense	69	200
Restricted Stock [Member]
Share-based compensation expense		$ 1