Other Comprehensive Income Other Comprehensive Income, Text (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2017	Apr. 30, 2016	Apr. 30, 2017	Apr. 30, 2016
Other Comprehensive Income (Loss), Tax [Abstract]
Net investment hedge translation adjustments	$ 752	$ 1,456	$ (1,373)	$ 75
Cash flow hedges	90	(126)	(46)	428
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax	0	25	0	27
Other income tax adjustments and currency translation	(21)	(42)	39	(52)
Income tax expense related to items of other comprehensive loss	821	1,313	(1,380)	478
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance			(54,745)	(45,034)
Other Comprehensive Income (Loss), before Reclassification			(8,509)	4,264
Amounts reclassified from accumulated other comprehensive income			(85)	(1,626)
Ending balance	(63,339)	(42,396)	(63,339)	(42,396)
Cash flow hedges
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance			(857)	9
Other Comprehensive Income (Loss), before Reclassification			563	(368)
Amounts reclassified from accumulated other comprehensive income			323	106
Ending balance	29	(465)	29	(465)
Unamortized gain on post-retirement plans
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance			2,236	3,438
Other Comprehensive Income (Loss), before Reclassification			72	(2)
Amounts reclassified from accumulated other comprehensive income			(408)	1,520
Ending balance	1,900	1,916	1,900	1,916
Foreign currency translation adjustments
Accumulated Other Comprehensive Loss [Roll Forward]
Beginning balance			(56,124)	(48,481)
Other Comprehensive Income (Loss), before Reclassification			(9,144)	4,634
Amounts reclassified from accumulated other comprehensive income			0	0
Ending balance	$ (65,268)	$ (43,847)	$ (65,268)	$ (43,847)