Adoption of Accounting Standards Updates	3 Months Ended
Oct. 31, 2011
Adoption of Accounting Standards Updates [Abstract]
Adoption of Accounting Standards Updates	(2) Adoption of Accounting Standards Updates The Financial Accounting Standards Board's ("FASB") Accounting Standards Codification ("ASC") is subject to updates by FASB, which are known as Accounting Standards Updates ("ASUs"). The following are FASB ASUs which have been issued and incorporated into the FASB ASC and adopted by us: On August 1, 2011, we adopted FASB ASU No. 2010-06, which amends the disclosure requirements of FASB ASC 820-10, "Fair Value Measurements and Disclosures – Overall." This FASB ASU requires that information about purchases, sales, issuances and settlements be presented separately, on a gross basis, in Level 3 fair value measurement reconciliations. Our adoption of this ASU did not have any impact on our condensed consolidated financial statements, as we have historically valued our money market mutual funds and U.S. Treasury securities using Level 1 inputs and do not have any other assets or liabilities in our Condensed Consolidated Balance Sheets at estimated fair value. On August 1, 2011, we adopted FASB ASU No. 2010-28, which amends the factors considered in determining if goodwill is impaired in FASB ASC 350, "Intangibles – Goodwill and Other." This ASU requires entities that have reporting units with carrying amounts that are zero or negative to assess whether it is more likely than not that the reporting unit's goodwill is impaired and, if an impairment is likely, to perform Step 2 of the goodwill impairment test for the reporting unit(s). On August 1, 2011, the date we performed our annual goodwill impairment test for fiscal 2012, none of our reporting units with goodwill had a zero or negative carrying value and, as such, our adoption of this ASU did not have any impact on our condensed consolidated financial statements. On August 1, 2011, we adopted FASB ASU No. 2010-29, which amends the presentation and disclosure requirements of FASB ASC 805, "Business Combinations." This ASU requires a public entity that presents comparative financial statements to disclose revenue and earnings of the combined entity as though the business combination(s) that occurred during the current year had occurred as of the beginning of the comparable prior annual reporting period only. This ASU also expands the supplemental proforma disclosures required. Our adoption of this ASU did not have any impact on our condensed consolidated financial statements, as we did not acquire any businesses during the three months ended October 31, 2011. On August 1, 2011, we adopted FASB ASU No. 2010-20, which amends ASC 310, "Receivables" by requiring additional disclosures regarding troubled debt restructuring. In addition, we also adopted FASB ASU No. 2011-02, which amends the previously issued guidance on evaluation of whether or not a restructuring constitutes a troubled debt restructuring. Our adoption of these ASUs did not have any impact on our condensed consolidated financial statements given that substantially all of our receivables are classified as trade receivables.

(2) Adoption of Accounting Standards Updates

The Financial Accounting Standards Board's ("FASB") Accounting Standards Codification ("ASC") is subject to updates by FASB, which are known as Accounting Standards Updates ("ASUs"). The following are FASB ASUs which have been issued and incorporated into the FASB ASC and adopted by us:

On August 1, 2011, we adopted FASB ASU No. 2010-06, which amends the disclosure requirements of FASB ASC 820-10, "Fair Value Measurements and Disclosures – Overall." This FASB ASU requires that information about purchases, sales, issuances and settlements be presented separately, on a gross basis, in Level 3 fair value measurement reconciliations. Our adoption of this ASU did not have any impact on our condensed consolidated financial statements, as we have historically valued our money market mutual funds and U.S. Treasury securities using Level 1 inputs and do not have any other assets or liabilities in our Condensed Consolidated Balance Sheets at estimated fair value.

On August 1, 2011, we adopted FASB ASU No. 2010-28, which amends the factors considered in determining if goodwill is impaired in FASB ASC 350, "Intangibles – Goodwill and Other." This ASU requires entities that have reporting units with carrying amounts that are zero or negative to assess whether it is more likely than not that the reporting unit's goodwill is impaired and, if an impairment is likely, to perform Step 2 of the goodwill impairment test for the reporting unit(s). On August 1, 2011, the date we performed our annual goodwill impairment test for fiscal 2012, none of our reporting units with goodwill had a zero or negative carrying value and, as such, our adoption of this ASU did not have any impact on our condensed consolidated financial statements.

On August 1, 2011, we adopted FASB ASU No. 2010-29, which amends the presentation and disclosure requirements of FASB ASC 805, "Business Combinations." This ASU requires a public entity that presents comparative financial statements to disclose revenue and earnings of the combined entity as though the business combination(s) that occurred during the current year had occurred as of the beginning of the comparable prior annual reporting period only. This ASU also expands the supplemental proforma disclosures required. Our adoption of this ASU did not have any impact on our condensed consolidated financial statements, as we did not acquire any businesses during the three months ended October 31, 2011.

On August 1, 2011, we adopted FASB ASU No. 2010-20, which amends ASC 310, "Receivables" by requiring additional disclosures regarding troubled debt restructuring. In addition, we also adopted FASB ASU No. 2011-02, which amends the previously issued guidance on evaluation of whether or not a restructuring constitutes a troubled debt restructuring. Our adoption of these ASUs did not have any impact on our condensed consolidated financial statements given that substantially all of our receivables are classified as trade receivables.