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Note 4 - Calculation of EPS (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended
Dec. 24, 2016
Dec. 26, 2015
Net Earnings available to common stockholders $ 13,540 $ 12,978
Weighted average number of basic shares (in shares) 18,686 18,687
Earnings per basic share (in dollars per share) $ 0.72 $ 0.69
Options
Options (in shares) 101 152
Options (in dollars per share)
Net Earnings available to common stockholders plus assumed conversions $ 13,540 $ 12,978
Weighted average number of diluted shares (in shares) 18,787 18,839
Earnings per diluted share (in dollars per share) $ 0.72 $ 0.69