Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (109,077)	$ (55,953)
Other comprehensive loss before reclassification	(16,859)	(4,186)
Amounts reclassified from accumulated other comprehensive loss	578	532
Ending balance	(126,514)	(60,671)
Unrealized gain on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	954	729
Other comprehensive loss before reclassification	813	(273)
Amounts reclassified from accumulated other comprehensive loss	435	425
Ending balance	1,332	31
Unamortized gain on post-retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1,436	1,888
Other comprehensive loss before reclassification	0	0
Amounts reclassified from accumulated other comprehensive loss	143	107
Ending balance	1,293	1,781
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(111,467)	(58,570)
Other comprehensive loss before reclassification	(17,672)	(3,913)
Amounts reclassified from accumulated other comprehensive loss	0	0
Ending balance	$ (129,139)	$ (62,483)