Note 4 - Calculation of EPS (Details) - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended		9 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
Net Earnings available to common stockholders	$ 26,791,000	$ 24,462	$ 55,357	$ 50,355
Weighted average number of shares outstanding, basic (in shares)	18,615	18,691	18,646	18,683
Earnings per share, basic (in dollars per share)	$ 1.44	$ 1.31	$ 2.97	$ 2.70
Options
Options (in shares)	90	132	119	132
Options (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.02)
Net Earnings available to common stockholders plus assumed conversions	$ 26,791,000	$ 24,462,000	$ 55,357,000	$ 50,355,000
Weighted average number of shares outstanding, diluted (in shares)	18,705	18,823	18,765	18,815
Earnings per share, diluted (in dollars per share)	$ 1.43	$ 1.30	$ 2.95	$ 2.68