COMPREHENSIVE (LOSS) INCOME - Accumulated Other Comprehensive Income, Net of Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 68,624	$ (9,206)
Foreign currency translation adjustment	(996)	(2,837)
Pension liability adjustments	0	(1,078)
Other comprehensive loss	(996)	(3,915)
Ending balance	71,665	(8,524)
Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(587)	4,140
Pension liability adjustments		(1,078)
Ending balance	(1,583)	225
Foreign Currency Items
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(623)	6,063
Foreign currency translation adjustment	(996)	(2,837)
Pension liability adjustments		0
Other comprehensive loss	(996)	(2,837)
Ending balance	(1,619)	3,226
Pension Items
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	36	(1,923)
Foreign currency translation adjustment	0	0
Pension liability adjustments		(1,078)
Other comprehensive loss	0	(1,078)
Ending balance	$ 36	$ (3,001)