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Restructuring (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			$ 4,096
General and administrative [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(408)	299	4,446	1,379
General and administrative [Member] \| Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(676)	286	4,096	859
General and administrative [Member] \| Relocation [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 268	$ 13	$ 350	$ 520

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References+ Details