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Fair Value of Financial Instruments (Tables)
3 Months Ended
Apr. 30, 2016
Fair Value of Financial Instruments [Abstract]  
Financial assets measured at fair value on a recurring basis
The table below segregates all financial assets that are measured at fair value on a recurring basis (at least annually) into the most appropriate level within the fair value hierarchy based on the inputs used to determine the fair value as of April 30, 2016 and January 30, 2016 (in thousands):

  
April 30, 2016
  
January 30, 2016
 
  
Level I
  
Level II
  
Level III
  
Level I
  
Level II
  
Level III
 
Short-term investments
 
$
79
  
$
-
  
$
-
  
$
79
  
$
-
  
$
-
 
Long-term investments
  
2,505
   
-
   
-
   
2,562
   
-
   
-
 
Total investments
 
$
2,584
  
$
-
  
$
-
  
$
2,641
  
$
-
  
$
-