Note 6 - Commitments and Contingencies (Tables)
 3 Months Ended
Apr. 29, 2017
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
Three Months Ended
 
Balance
Beginning of
Period
 
 
Additions
and
Adjustments
 
 
Deductions
 
 
Balance
End
of Period
 
April 29, 2017
   $
783
     $
84
     $
(140
)
   $
727
  
April 30, 2016
   $
959
     $
139
     $
(138
)
   $
960