Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2014		Oct. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 7,694		$ (42,153)
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(12,196)	[1]	10,366	[1]
Change in pension liabilities, net of tax
Prior service cost arising during period		[2]		[2]
Net gain/(loss) arising during period		[2]		[2]
Less: amortization of prior gain/(loss) included in net periodic pension cost	(6)	[2]	(91)	[2]
Less: amortization of prior service cost included in net periodic pension cost		[2]		[2]
Gains and losses on derivatives, net of tax
Realized gains or loss arising during the period
Less: reclassification adjustments for gains
Other comprehensive income (loss):	(12,202)		10,275
Comprehensive income (loss)	$ (4,508)		$ (31,878)

[1] Net of tax benefit of $0.7 million and tax expense of nil for the three months ended October 31, 2014, and October 31, 2013, respectively.

[2] Net of tax expense and benefit of nil for the three months ended October 31, 2014 and October 31, 2013, respectively.