Other Comprehensive Income Other Comprehensive Income, Text (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
Accumulated Other Comprehensive Loss [rollforward]
Beginning balance, July 31, 2013			$ 56,063
Other comprehensive (loss) income before reclassification			8,057
Amounts reclassified from accumulated other comprehensive income			(433)
Ending balance, April 30, 2014	63,687		63,687
Other Comprehensive Income (Loss), Tax [Abstract]
Net investment hedge translation adjustments	787	(1,360)	1,525	2,383
Long-term intercompany loan settlements	(1,176)	430	667	(162)
Cash flow hedges	84	(131)	24	467
Other income tax adjustments	56	118	6	185
Income tax (expense) benefit related to items of other comprehensive income	(249)	(943)	2,222	2,873
Cash flow hedging
Accumulated Other Comprehensive Loss [rollforward]
Beginning balance, July 31, 2013			99
Other comprehensive (loss) income before reclassification			(18)
Amounts reclassified from accumulated other comprehensive income			(82)
Ending balance, April 30, 2014	(1)		(1)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Loss [rollforward]
Beginning balance, July 31, 2013			54,111
Other comprehensive (loss) income before reclassification			8,116
Amounts reclassified from accumulated other comprehensive income			0
Ending balance, April 30, 2014	62,227		62,227
Other Postretirement Benefit Plan, Defined Benefit [Member]
Accumulated Other Comprehensive Loss [rollforward]
Beginning balance, July 31, 2013			1,853
Other comprehensive (loss) income before reclassification			(41)
Amounts reclassified from accumulated other comprehensive income			(351)
Ending balance, April 30, 2014	$ 1,461		$ 1,461