Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

- Definition

Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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+ Details

Summary of Significant Accounting Policies (Details 3) (USD $)	12 Months Ended
	Jul. 31, 2013 item	Jul. 31, 2012	Jul. 31, 2011
Identifiable intangible assets
Number of segments for which a two-step quantitative goodwill impairment test was not proceeded by the company	3
Intangible assets impairment	$ 0
Goodwill impairment	0
Goodwill	211,618,000	183,655,000	134,770,000
Specialty Packaging segment
Identifiable intangible assets
Goodwill	$ 6,968,000
Assumed compounded annual sales growth impacting the impairment assessment (as a percent)	10.70%
Minimum
Identifiable intangible assets
Estimated useful lives	2 years
Maximum
Identifiable intangible assets
Estimated useful lives	20 years