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FAIR VALUE MEASUREMENTS (Tables)
6 Months Ended
Jul. 31, 2013
FAIR VALUE MEASUREMENTS [Abstract]  
Summary of financial assets, measured at fair value
The following table sets forth the financial assets and liabilities, measured at fair value, as of July 31, 2013 and January 31, 2013:

 
 
Fair value measurement at reporting date using
 
 
 
Quoted Prices in
Active Markets for
Identical Assets
(Level 1)
  
Significant Other
Observable Inputs
(Level 2)
  
Significant
Unobservable Inputs
(Level 3)
 
 
 
  
(in thousands)
  
 
Money market mutual funds as of July 31, 2013
 
$
50,997
  
$
  
$
 
Money market mutual funds as of January 31, 2013
 
$
44,871
  
$
  
$
 
Asset related to interest rate swap as of July 31, 2013
 
$
  
$
324
  
$
 
Liability related to interest rate swap as of January 31, 2013
 
$
  
$
(384
)
 
$
 
Fair values of the derivative instrument
The fair values of the derivative instrument at July 31, 2013 and January 31, 2013 were as follows (in thousands):

 
Asset/(Liability) Derivative
 
 
Fair Value
 
 
 
Balance Sheet Location
July 31,
2013
January 31,
2013
Derivative instrument:
 
 
 
Interest rate swap
Other assets, net (Other liabilities)
$
324
 
$
(384
)
Total
 
$
324
 
$
(384
)