Fair Value Measurements (Tables)

3 Months Ended

Oct. 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 October 31, 2012
Description	Balance at October 31, 2012		Level 1		Level 2		Level 3
Money Market	$	9,025	$	9,025	$	—	$	—
Commercial Paper	$	630	$	—	$	630	$	—
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 October 31, 2011
Description	Balance at October 31, 2011		Level 1		Level 2		Level 3
US Treasury	$	8,385	$	8,385	$	—	$	—
Certificates of Deposit	$	2,807	$	—	$	2,807	$	—