Accumulated Other Comprehensive Loss, Tax (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Other Comprehensive Income (Loss), Tax [Abstract]
Cash flow hedges	$ (87)	$ 47	$ (191)	$ (1)
Pension and other post-retirement benefits	15	6	15	246
Other income tax adjustments and currency translation	428	(1,304)	433	(1,297)
Income tax benefit (expense) related to items of other comprehensive (loss) income	$ 356	$ (1,251)	$ 257	$ (1,052)