Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2024	Oct. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (109,622)	$ (93,061)
Other comprehensive loss before reclassification	(1,481)	(21,108)
Amounts reclassified from accumulated other comprehensive loss	(499)	(1,114)
Ending balance	(111,602)	(115,283)
Unrealized loss on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(149)	1,641
Other comprehensive loss before reclassification	(1,402)	(744)
Amounts reclassified from accumulated other comprehensive loss	(348)	(963)
Ending balance	(1,899)	(66)
Unamortized gain on post-retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	462	756
Other comprehensive loss before reclassification	0	0
Amounts reclassified from accumulated other comprehensive loss	(151)	(151)
Ending balance	311	605
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(109,935)	(95,458)
Other comprehensive loss before reclassification	(79)	(20,364)
Amounts reclassified from accumulated other comprehensive loss	0	0
Ending balance	$ (110,014)	$ (115,822)