Accumulated Other Comprehensive Loss, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (93,061)	$ (109,077)
Other comprehensive income (loss) before reclassification	(21,108)	(16,859)
Amounts reclassified from accumulated other comprehensive loss	(1,114)	(578)
Ending balance	(115,283)	(126,514)
Unrealized gain (loss) on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1,641	954
Other comprehensive income (loss) before reclassification	(744)	813
Amounts reclassified from accumulated other comprehensive loss	(963)	(435)
Ending balance	(66)	1,332
Unamortized gain on post-retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	756	1,436
Other comprehensive income (loss) before reclassification	0	0
Amounts reclassified from accumulated other comprehensive loss	(151)	(143)
Ending balance	605	1,293
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(95,458)	(111,467)
Other comprehensive income (loss) before reclassification	(20,364)	(17,672)
Amounts reclassified from accumulated other comprehensive loss	0	0
Ending balance	$ (115,822)	$ (129,139)