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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Accumulated Other Comprehensive Items (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income at beginning of period			$ 13,968
Foreign currency translation adjustment	493	1,277	(6,661)	1,219
Pension liability adjustments		(1,164)	(811)	(914)
Net unrealized holding gain on securities	7	11	1	7
Net current-period other comprehensive income	500	124	(7,471)	312
Accumulated other comprehensive income at end of period	6,497		6,497
Foreign currency items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income at beginning of period			15,833
Foreign currency translation adjustment			(6,661)
Net current-period other comprehensive income			(6,661)
Accumulated other comprehensive income at end of period	9,172		9,172
Pension items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income at beginning of period			(1,900)
Pension liability adjustments			(811)
Net current-period other comprehensive income			(811)
Accumulated other comprehensive income at end of period	(2,711)		(2,711)
Unrealized gains (losses) on securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive income at beginning of period			35
Net unrealized holding gain on securities			1
Net current-period other comprehensive income			1
Accumulated other comprehensive income at end of period	$ 36		$ 36