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Past period under consideration for acquisitions completed to evaluate initial purchase price allocations.

+ References

No definition available.

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- Definition

The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). 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)

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-Paragraph 44

-Subparagraph a(3)

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- Definition

The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

+ References

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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- Definition

Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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-Publisher FASB

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- Definition

The gain (loss) resulting from the sale of a disposal group that is not a discontinued operation. It is included in income from continuing operations before income taxes in the income statement.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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This element represents the cash inflow during the period from the sale of a component of the entity.

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Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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-Publisher SEC

-Name Regulation S-X (SX)

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Acquisitions and Divestitures (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended			9 Months Ended		1 Months Ended	9 Months Ended
	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012	Apr. 30, 2011	Apr. 30, 2012 Customer Relationships [Member]	Apr. 30, 2012 Teklynx [Member]	Apr. 30, 2011 Teklynx [Member]	Nov. 30, 2010 Warehouse [Member]	Apr. 30, 2012 Grafo [Member] Y
Acquisitions And Divestitures (Textual) [Abstract]
Net sales	$ 331,629	$ 337,896	$ 1,001,721	$ 996,493					$ 3,000
Acquisition of Grafo									3,039
Purchase price allocation	1,227	4,792	1,227	4,792
Purchase price assigned to customer relationship	961		961		961
Period of amortization									7
Evaluation of initial purchase price									12 months
Purchase price of acquisitions			3,039	7,970				7,970
Gain on the sale of business				4,394			4,394
Proceeds net of cash retained in the business				$ 12,979		$ 12,979