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Fair Value Measurements (Tables)
 6 Months Ended
Jan. 31, 2013
Fair Value Disclosures [Abstract]  
Summary Of Cash Equivalents Measured At Fair Value
The table below summarizes the Company’s cash equivalents measured at fair value (all other assets and liabilities measured at fair value are immaterial) (in thousands):
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fair Value Measurement as of January 31, 2013
 
Description
 
Balance at January 31, 2013
 
Level 1
 
Level 2
 
Level 3
 
 
Money Market
 
$
19,025

 
$
19,025

 
$
—

 
$
—

 
Commercial Paper
 
$
10,626

 
$
—

 
$
10,626

 
$
—

 
Certificates of Deposit
 
$
630

 
$
—

 
$
630

 
$
—

 
 
 
 
 
 
 
Fair Value Measurement as of July 31, 2012
 
Description
 
Balance at July 31, 2012
 
Level 1
 
Level 2
 
Level 3
 
Money Market
 
$
6,581

 
$
6,581

 
$
—

 
$
—

 
Commercial Paper
 
$
2,441

 
$
—

 
$
2,441

 
$
—

 
Certificates of Deposit
 
$
1,260

 
$
—

 
$
1,260

 
$
—

 
 
 
 
 
 
 
Fair Value Measurement as of January 31, 2012
 
Description
 
Balance at January 31, 2012
 
Level 1
 
Level 2
 
Level 3
 
Money Market
 
$
8,386

 
$
8,386

 
$
—

 
$
—

 
Commercial Paper
 
$
19,990

 
$
—

 
$
19,990

 
$
—

 
Certificates of Deposit
 
$
1,890

 
$
—

 
$
1,890

 
$
—