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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. 29, 2025
Mar. 30, 2024
Mar. 29, 2025
Mar. 30, 2024
Mar. 30, 2024
Net earnings available to common stockholders $ 4,824 $ 13,329 $ 9,967 $ 20,611  
Net earnings available to common stockholders (in shares) 19,488 19,380 19,480 19,362 19,362
Net earnings available to common stockholders (in dollars per share) $ 0.25 $ 0.69 $ 0.51 $ 1.06 $ 1.06
RSU's, PSU’s and options $ 0 $ 0 $ 0 $ 0  
RSU's, PSU’s and options (in shares) 75 38 88 49  
RSU's, PSU’s and options (in dollars per share) $ 0 $ 0 $ 0 $ 0  
Net earnings available to common stockholders plus assumed conversions $ 4,824 $ 13,329 $ 9,967 $ 20,611  
Net earnings available to common stockholders plus assumed conversions (in shares) 19,563 19,418 19,568 19,411 19,411
Net earnings available to common stockholders plus assumed conversions (in dollars per share) $ 0.25 $ 0.69 $ 0.51 $ 1.06 $ 1.06