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SEGMENT REPORTING AND GEOGRAPHIC INFORMATION - Summary of Results for Reportable Segments (Details) $ in Thousands | 3 Months Ended
--- | ---
Sep. 30, 2020 USD ($) segment | Sep. 30, 2019 USD ($)
Segment Reporting and Geographic Information |  |
Number of reportable segments | segment | 4 |
Revenues | $ 1,538,620 | $ 1,413,414
Operating segments |  |
Segment Reporting and Geographic Information |  |
Revenues | 1,538,225 | 1,413,554
Segment gross margin | 954,920 | 857,227
Operating segments | Semiconductor Process Control |  |
Segment Reporting and Geographic Information |  |
Revenues | 1,267,954 | 1,163,632
Segment gross margin | 814,810 | 742,342
Operating segments | Specialty Semiconductor Process |  |
Segment Reporting and Geographic Information |  |
Revenues | 88,954 | 69,139
Segment gross margin | 49,928 | 38,164
Operating segments | PCB, Display and Component Inspection |  |
Segment Reporting and Geographic Information |  |
Revenues | 181,177 | 178,552
Segment gross margin | 90,169 | 76,068
Operating segments | Other |  |
Segment Reporting and Geographic Information |  |
Revenues | 140 | 2,231
Segment gross margin | $ 13 | $ 653

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