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Acquisitions (Schedule Of Identifiable Intangible Assets At Fair Value) (Details) - 9 months ended May. 31, 2015 - Elecsys Corporation [Member] - USD ($) $ in Thousands	Total
Business Acquisition [Line Items]
Weighted average useful life in years	11 years 6 months
Fair Value of Identifiable Asset	$ 24,490
Customer Relationships [Member]
Business Acquisition [Line Items]
Weighted average useful life in years	10 years 10 months 24 days
Fair Value of Identifiable Asset	$ 11,820
Developed Technology (Proprietary) [Member]
Business Acquisition [Line Items]
Weighted average useful life in years	14 years 8 months 12 days
Fair Value of Identifiable Asset	$ 4,420
Non-compete Agreements [Member]
Business Acquisition [Line Items]
Weighted average useful life in years	4 years 6 months
Fair Value of Identifiable Asset	$ 430
Backlog [Member]
Business Acquisition [Line Items]
Weighted average useful life in years	4 months 24 days
Fair Value of Identifiable Asset	$ 390
Trade Names [Member]
Business Acquisition [Line Items]
Fair Value of Identifiable Asset	17,100
Fair Value of Identifiable Asset	$ 7,430

X

- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 350



-SubTopic 30



-Section 50



-Paragraph 1



-Subparagraph (a)(3)



-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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+ References

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+ References

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