Goodwill And Other Intangible Assets (Estimated Annual Amortization Expense) (Details) (USD $) In Thousands	3 Months Ended
Oct. 31, 2011
Goodwill And Other Intangible Assets [Abstract]
Estimated annual amortization expense, For the fiscal year ending July 2012	$ 11,131
Estimated annual amortization expense, For the fiscal year ending July 2013	10,939
Estimated annual amortization expense, For the fiscal year ending July 2014	10,671
Estimated annual amortization expense, For the fiscal year ending July 2015	10,313
Estimated annual amortization expense, For the fiscal year ending July 2016 and thereafter	$ 82,201

The amount of amortization expense expected to be recognized during year three of the five succeeding fiscal years.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

Name:	us-gaap_FutureAmortizationExpenseYearThree
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration