Note 5 - Earnings Per Share - Calculation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 25, 2023	Mar. 26, 2022	Mar. 25, 2023	Mar. 26, 2022
Net earnings available to common stockholders	$ 6,871	$ 3,271	$ 13,504	$ 14,362
Net earnings available to common stockholders (in shares)	19,238	19,134	19,230	19,110
Net earnings available to common stockholders (in dollars per share)	$ 0.36	$ 0.17	$ 0.70	$ 0.75
Options	$ 0	$ 0	$ 0	$ 0
RSU's and options (in shares)	57	72	55	70
RSU's and options (in dollars per share)	$ 0	$ 0	$ 0	$ 0
Net earnings available to common stockholders plus assumed conversions	$ 6,871	$ 3,271	$ 13,504	$ 14,362
Net earnings available to common stockholders plus assumed conversions (in shares)	19,295	19,206	19,285	19,180
Net earnings available to common stockholders plus assumed conversions (in dollars per share)	$ 0.36	$ 0.17	$ 0.70	$ 0.75