CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Statement of Comprehensive Income [Abstract]
Net earnings	$ 22,553	$ 18,703
Foreign currency translation adjustments:
Foreign currency translation adjustments	(14,254)	(6,483)
Reclassification adjustment for gains included in net earnings		0
Net investment hedge translation adjustments	4,021	871
Long-term intercompany loan translation adjustments:
Long-term intercompany loan translation adjustments:	(837)	(1,424)
Cash flow hedges:
Net gain (loss) recognized in other comprehensive loss	298	(260)
Reclassification adjustment for losses (gains) included in net earnings	405	(457)
Total cash flow hedges	703	(717)
Pension and other post-retirement benefits:
Actuarial gain amortization	(136)	(161)
Prior service credit amortization	0	(622)
Total pension and post-retirement benefits	(136)	(783)
Other comprehensive income (loss), before tax	(10,503)	(8,536)
Income tax benefit (expense) related to items of other comprehensive loss	(1,666)	144
Other comprehensive loss, net of tax	(12,169)	(8,392)
Comprehensive income	$ 10,384	$ 10,311