Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Apr. 30, 2015	Apr. 30, 2014	Apr. 30, 2015	Apr. 30, 2014
Net loss	$ (12,106)us-gaap_NetIncomeLoss	$ (9,478)us-gaap_NetIncomeLoss	$ (13,440)us-gaap_NetIncomeLoss	$ (7,797)us-gaap_NetIncomeLoss
Other comprehensive income:
Foreign currency translation adjustment	493	1,277	(6,661)	1,219
Pension liability adjustments, net of tax		(1,164)	(811)	(914)
Net unrealized holding gain on securities, net of tax	7	11	1	7
Total adjustments	500	124	(7,471)	312
Comprehensive loss	$ (11,606)us-gaap_ComprehensiveIncomeNetOfTax	$ (9,354)us-gaap_ComprehensiveIncomeNetOfTax	$ (20,911)us-gaap_ComprehensiveIncomeNetOfTax	$ (7,485)us-gaap_ComprehensiveIncomeNetOfTax

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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

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Amount after tax and reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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