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Note 4 - Fair Value Measurements (Tables)
3 Months Ended
Dec. 29, 2018
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
(In thousands)
 
Total
   
Quoted Prices 
in
Active Markets
(Level 1)
   
Observable Inputs
(Level 2)
 
As of December 29, 2018:
                       
Current assets:
                       
Cash equivalents
  $
16,565
    $
16,565
    $
-
 
Other assets:
                       
Cash surrender value of life insurance policies
   
9,238
     
-
     
9,238
 
Total
  $
25,803
    $
16,565
    $
9,238
 
                         
As of September 29, 2018:
                       
Current assets:
                       
Cash equivalents
  $
44,257
    $
44,257
    $
-
 
Other assets:
                       
Cash surrender value of life insurance policies
   
9,769
     
-
     
9,769
 
Total
  $
54,026
    $
44,257
    $
9,769