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Note 12 - Restructuring Activity (Tables)
 9 Months Ended
Jun. 29, 2018
Notes Tables  
Restructuring and Related Costs [Table Text Block]
   
June 29,
    
September 29,
  
   
2018
    
2017
  
                 
Balance at beginning of period
   $
2,582
     $
3,160
  
                 
Additions:
                
RTC cease-use charge
    
104
      
386
  
Toronto surrender agreement
    
160
      
0
  
Accretion expense
    
146
      
175
  
     
410
      
561
  
                 
Reductions:
                
Payment on Toronto surrender agreement
    
(160
 )    
0
  
Rent payments net of deferred rent
    
(690
 )    
(1,139
 )
     
(850
 )    
(1,139
 )
                 
Balance at end of period
   $
2,142
     $
2,582
  
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]
   
June 29,
    
September 29,
  
   
2018
    
2017
  
Current
   $
938
     $
895
  
Long Term
    
1,204
      
1,687
  
    $
2,142
     $
2,582