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Fair Value Measurements (Tables)
 12 Months Ended
Jul. 31, 2012
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 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 July 31, 2011
Description
Balance at July 31, 2011
Level 1
Level 2
Level 3
US Treasury
$
8,381

$
8,381

$
—

$
—

Certificates of Deposit
$
2,490

$
—

$
2,490

$
—