Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (109,077)	$ (55,953)
Other comprehensive income (loss) before reclassification	14,483	(22,343)
Amounts reclassified from accumulated other comprehensive loss	(776)	(643)
Ending balance	(95,370)	(78,939)
Unrealized gain on cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	954	729
Other comprehensive income (loss) before reclassification	1,593	(142)
Amounts reclassified from accumulated other comprehensive loss	(598)	(453)
Ending balance	1,949	134
Unamortized gain on post-retirement plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	1,436	1,888
Other comprehensive income (loss) before reclassification	0	(60)
Amounts reclassified from accumulated other comprehensive loss	(178)	(190)
Ending balance	1,258	1,638
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(111,467)	(58,570)
Other comprehensive income (loss) before reclassification	12,890	(22,141)
Amounts reclassified from accumulated other comprehensive loss	0	0
Ending balance	$ (98,577)	$ (80,711)