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Marketable Securities
9 Months Ended
Oct. 31, 2015
Marketable Securities

3. Marketable Securities

During all periods shown, marketable securities are classified as available-for-sale. The amortized cost, gross unrealized gains (losses) and fair value of available-for-sale securities by major security type and class of security as of October 31, 2015, January 31, 2015 and October 31, 2014 were as follows:

 

     Amortized
Cost
     Unrealized
Gains
     Unrealized
(Losses)
     Fair Value  

As of October 31, 2015

           

Short-term Investments:

           

Municipal and pre-refunded municipal bonds

   $ 31,100       $ 46       $ (1    $ 31,145   

Corporate bonds

     37,260         4         (45      37,219   

Certificates of deposit

     1,181         —           —           1,181   
  

 

 

    

 

 

    

 

 

    

 

 

 
     69,541         50         (46      69,545   
  

 

 

    

 

 

    

 

 

    

 

 

 

Long-term Investments:

           

Municipal and pre-refunded municipal bonds

     30,265         115         (2      30,378   

Corporate bonds

     15,210         7         (28      15,189   

Certificates of deposit

     3,460         —           —           3,460   

Mutual funds, held in rabbi trust

     4,840         272         (1      5,111   
  

 

 

    

 

 

    

 

 

    

 

 

 
     53,775         394         (31      54,138   
  

 

 

    

 

 

    

 

 

    

 

 

 
   $ 123,316       $ 444       $ (77    $ 123,683   
  

 

 

    

 

 

    

 

 

    

 

 

 

As of January 31, 2015

           

Short-term Investments:

           

Municipal and pre-refunded municipal bonds

   $ 30,509       $ 41       $ (2    $ 30,548   

Corporate bonds

     56,594         20         (24      56,590   

Certificates of deposit

     11,127         5         —           11,132   

Treasury bills

     2,033         3         —           2,036   

Commercial paper

     3,938         2         —           3,940   
  

 

 

    

 

 

    

 

 

    

 

 

 
     104,201         71         (26      104,246   
  

 

 

    

 

 

    

 

 

    

 

 

 

Long-term Investments:

           

Municipal and pre-refunded municipal bonds

     42,840         113         (6      42,947   

Corporate bonds

     46,754         22         (40      46,736   

Certificates of deposit

     3,066         —           —           3,066   

Mutual funds, held in rabbi trust

     3,816         16         (54      3,778   

Treasury bills

     7,111         9         —           7,120   

Federal government agencies

     799         2         —           801   
  

 

 

    

 

 

    

 

 

    

 

 

 
     104,386         162         (100      104,448   
  

 

 

    

 

 

    

 

 

    

 

 

 
   $ 208,587       $ 233       $ (126    $ 208,694   
  

 

 

    

 

 

    

 

 

    

 

 

 

As of October 31, 2014

           

Short-term Investments:

           

Municipal and pre-refunded municipal bonds

   $ 26,746       $ 34       $       $ 26,780   

Corporate bonds

     70,859         47         (30      70,876   

Certificates of deposit

     11,978         4         —           11,982   

Commercial paper

     3,592         1         —           3,593   

Federal government agencies

     1,771         3         —           1,774   
  

 

 

    

 

 

    

 

 

    

 

 

 
     114,946         89         (30      115,005   
  

 

 

    

 

 

    

 

 

    

 

 

 

Long-term Investments:

           

Municipal and pre-refunded municipal bonds

     38,292         90         (7      38,375   

Corporate bonds

     59,504         65         (83      59,486   

Certificates of deposit

     3,686         —           —           3,686   

Mutual funds, held in rabbi trust

     3,399         134         (4      3,529   

Treasury bills

     8,717         9         —           8,726   

Federal government agencies

     798         —           —           798   
  

 

 

    

 

 

    

 

 

    

 

 

 
     114,396         298         (94      114,600   
  

 

 

    

 

 

    

 

 

    

 

 

 
   $ 229,342       $ 387       $ (124    $ 229,605   
  

 

 

    

 

 

    

 

 

    

 

 

 

Proceeds from the sales and maturities of available-for-sale securities were $296,172 and $720,668 for the nine months ended October 31, 2015 and 2014, respectively. The Company included in “Other income (expense), net,” realized gains of $11 and $53 for the three and nine months ended October 31, 2015, respectively, and of $30 and $202 for the three and nine months ended October 31, 2014, respectively. Amortization of discounts and premiums, net, resulted in charges of $997 and $3,155 for the three and nine months ended October 31, 2015, respectively, and $1,309 and $5,416 for the three and nine months ended October 31, 2014, respectively. Mutual funds represent assets held in an irrevocable rabbi trust for the Company’s Non-qualified Deferred Compensation Plan (“NQDC”). These assets are a source of funds to match the funding obligations to participants in the NQDC but are subject to the Company’s general creditors. The Company elected the fair value option for financial assets for the mutual funds held in the rabbi trust resulting in all unrealized gains and losses being recorded in “Other income (expense), net” in the Condensed Consolidated Statements of Income and not as a component of accumulated other comprehensive loss.