SEGMENT INFORMATION - Summarized Financial Information of Net Revenue from External Customers by Group of Services (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	$ 43,855	$ 46,142	$ 128,240	$ 148,283
Mainland China
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	15,822	13,852	45,577	48,049
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	9,776	12,917	31,593	38,262
Netherlands
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	5,035	4,872	16,121	15,149
Czech Republic
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	4,241	6,202	9,436	19,497
Singapore
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	4,413	4,705	12,332	14,940
Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue from contracts with customers	$ 4,568	$ 3,594	$ 13,181	$ 12,386