Goodwill And Other Intangible Assets (Reconciliation Of Intangible Assets) (Details) (USD $) In Thousands	12 Months Ended
Jul. 31, 2011	Jul. 31, 2010
Goodwill And Other Intangible Assets
Beginning balance, Gross Carrying Amount	$ 83,487	$ 85,809
Beginning balance, Accumulated Amortization	(25,195)	(20,423)
Beginning balance, Net Intangible Assets	58,292	65,386
Amortization expense, Accumulated Amortization	(5,917)	(6,007)
Amortization expense, Net Intangible Assets	(5,917)	(6,007)
Foreign exchange translation, Gross Carrying Value	1,952	(2,322)
Foreign exchange translation, Accumulated Amortization	(831)	1,235
Foreign exchange translation, Net Intangible Assets	1,121	(1,087)
Ending balance, Gross Carrying Amount	85,439	83,487
Ending balance, Accumulated Amortization	(31,943)	(25,195)
Ending balance, Net Intangible Assets	$ 53,496	$ 58,292

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Finite lived intangible assets foreign exchange translation accumulated amortization

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Finite lived intangible assets foreign exchange translation gross carrying value

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Finite lived intangible assets foreign exchange translation net intangible assets

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Goodwill and Other Intangible Assets [Abstract]

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The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph a(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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)(1)
-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

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Aggregate amount of intangible asset amortization recognized as expense during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph a(2)
-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)(2)
-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

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Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

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The aggregate sum of gross carrying value of a major finite-lived intangible asset class, less accumulated amortization and any impairment charges. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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