Other Comprehensive Income Other Comprehensive Income, Text (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Oct. 31, 2014	Oct. 31, 2013
Accumulated Other Comprehensive Loss [rollforward]
Beginning balance, July 31, 2014	$ 64,156	$ 56,063
Other Comprehensive Income (Loss), before Reclassification	(20,612)	14,241
Amounts reclassified from accumulated other comprehensive income	(34,979)	(172)
Ending balance, October 31, 2014	8,565	70,132
Other Comprehensive Income (Loss), Tax [Abstract]
Net investment hedge translation adjustments	(3,179)	1,314
Long-term intercompany loan settlements	0	1,403
Cash flow hedges	(203)	18
Other income tax adjustments and currency translation	56	(93)
Income tax (expense) benefit related to items of other comprehensive income	(3,326)	2,642
Cash flow hedging
Accumulated Other Comprehensive Loss [rollforward]
Beginning balance, July 31, 2014	(12)	99
Other Comprehensive Income (Loss), before Reclassification	418	(32)
Amounts reclassified from accumulated other comprehensive income	13	(55)
Ending balance, October 31, 2014	419	12
Unamortized gain on post-retirement plans
Accumulated Other Comprehensive Loss [rollforward]
Beginning balance, July 31, 2014	4,854	1,853
Other Comprehensive Income (Loss), before Reclassification	0	0
Amounts reclassified from accumulated other comprehensive income	(295)	(117)
Ending balance, October 31, 2014	4,559	1,736
Foreign currency translation adjustments
Accumulated Other Comprehensive Loss [rollforward]
Beginning balance, July 31, 2014	59,314	54,111
Other Comprehensive Income (Loss), before Reclassification	(21,030)	14,273
Amounts reclassified from accumulated other comprehensive income	(34,697)	0
Ending balance, October 31, 2014	$ 3,587	$ 68,384