XML 61 R31.htm IDEA: XBRL DOCUMENT v2.4.0.6

Cash, Cash Equivalents and Marketable Securities (Tables)

12 Months Ended

Jul. 31, 2012

Cash and Cash Equivalents [Abstract]

Schedule of cash and cash equivalents

As of July 31, 2012, cash and cash equivalents include the following (in thousands):

				Cost				Unrealized Gains				Unrealized Losses Less Than 12 Months				Unrealized Losses 12 Months or Longer				Estimated Fair Value
Cash				$	96,779			$	—			$	—			$	—			$	96,779
Money market funds					43,333				—				—				—				43,333
Total				$	140,112			$	—			$	—			$	—			$	140,112

As of July 31, 2011, cash and cash equivalents include the following (in thousands):

				Cost				Unrealized Gains				Unrealized Losses Less Than 12 Months				Unrealized Losses 12 Months or Longer				Estimated Fair Value
Cash				$	42,664			$	—			$	—			$	—			$	42,664
Money market funds					31,345				—				—				—				31,345
Total				$	74,009			$	—			$	—			$	—			$	74,009

X

- Details

Name:	us-gaap_CashAndCashEquivalentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of the components of cash, cash equivalents, and short-term investments. Short-term investments may include current marketable securities.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfCashCashEquivalentsAndShortTermInvestmentsTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration