Derivative Instruments and Hedging Activities Pre-Tax Gains and Losses related to Foreign Exchange Contracts (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Net gain recognized in other comprehensive (loss) income	$ 225	$ 451	$ 199	$ 1,148
Gains (losses) reclassified from OCI into cost of goods sold	$ 36	$ (60)	$ 604	$ (271)