COMPREHENSIVE INCOME (LOSS) - Accumulated Other Comprehensive Income Items (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Apr. 30, 2021	Apr. 30, 2022	Apr. 30, 2021
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ (36,740)	$ 47,747	$ 6,212	$ 48,818
Foreign currency translation adjustment	(2,461)	(112)	(2,276)	5,281
Total other comprehensive (loss) income	(2,461)	(112)	(2,276)	5,281
Ending balance	(9,427)	19,584	(9,427)	19,584
Accumulated Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	7,347	9,236	7,162	3,843
Foreign currency translation adjustment			(2,276)	5,281
Total other comprehensive (loss) income			(2,276)	5,281
Ending balance	4,886	9,124	4,886	9,124
Foreign Currency Items
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			9,762	5,025
Foreign currency translation adjustment			(2,276)	5,281
Total other comprehensive (loss) income			(2,276)	5,281
Ending balance	7,486	10,306	7,486	10,306
Pension Items
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance			(2,600)	(1,182)
Foreign currency translation adjustment			0	0
Total other comprehensive (loss) income			0	0
Ending balance	$ (2,600)	$ (1,182)	$ (2,600)	$ (1,182)