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Marketable Securities (Tables)
12 Months Ended
Jan. 30, 2016
Investments, Debt and Equity Securities [Abstract]  
Investments in Marketable Securities
The following table summarizes investments in marketable securities at January 30, 2016 and January 31, 2015 (in thousands):
 
Cost
 
Gross
Unrealized
Holding
Gains
 
Fair
Value
Commercial paper at January 30, 2016
$49,894
 
$38
 
$49,932
 
 
 
 
 
 
Commercial paper at January 31, 2015
$34,922
 
$35
 
$34,957