Annual report pursuant to Section 13 and 15(d)

SEGMENT REPORTING AND GEOGRAPHIC INFORMATION - Additional Information (Details)

v3.21.2
SEGMENT REPORTING AND GEOGRAPHIC INFORMATION - Additional Information (Details)
12 Months Ended
Jun. 30, 2021
reporting_Unit
Jun. 30, 2021
segment
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Segment Reporting Information [Line Items]          
Number of reportable segments 4 4      
Number of operating segments   6      
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk          
Segment Reporting Information [Line Items]          
Segment percent of total revenues     100.00% 100.00% 100.00%
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk | Largest Customer          
Segment Reporting Information [Line Items]          
Segment percent of total revenues     17.00% 20.00% 15.00%
Revenue from Contract with Customer Benchmark | Geographic Concentration Risk | Second Largest Customer          
Segment Reporting Information [Line Items]          
Segment percent of total revenues     15.00% 14.00%  
Semiconductor Process Control          
Segment Reporting Information [Line Items]          
Number of operating segments   2      
Specialty Semiconductor Process          
Segment Reporting Information [Line Items]          
Number of operating segments   1      
PCB, Display and Component Inspection          
Segment Reporting Information [Line Items]          
Number of operating segments   2