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Description of Business and Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 31, 2014	Jan. 31, 2013	Jan. 31, 2014	Jan. 31, 2013	Jul. 31, 2013
Cumulative Translation Adjustment Summary [Roll Forward]
Cumulative loss on foreign currency translation, Begining balance			$ (45,420)	$ (34,933)	$ (34,933)
Gain (Loss) on foreign currency translation	737	(2,109)	15,295	4,953	(10,487)
Cumulative loss on foreign currency translation, Ending balance	$ (30,125)		$ (30,125)		$ (45,420)

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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