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GOODWILL AND PURCHASED INTANGIBLE ASSETS - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Jun. 30, 2024
Goodwill [Line Items] |  |  |  |  |
Impairment of goodwill and purchased intangible assets |  |  | $ 230,400 |  |
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration] | Impairment of goodwill and purchased intangible assets | Impairment of goodwill and purchased intangible assets |  |  |
Intangible asset impairment charge | $ 8,700 | $ 26,400 |  |  |
Impairment of goodwill and purchased intangible assets | 239,100 | 219,000 | 239,100 | $ 219,000 |
Amortization of intangible assets | 58,900 | 59,400 | 115,600 | $ 122,700 |
Semiconductor Process Control: |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Impairment of goodwill and purchased intangible assets |  |  | 0 |  |
Non-deductible impairment of goodwill | 277,600 |  | 277,600 |  | $ 277,600
Specialty Semiconductor Process |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Impairment of goodwill and purchased intangible assets |  |  | 0 |  |
Non-deductible impairment of goodwill |  |  |  |  | 144,200
PCB And Component Inspection |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Impairment of goodwill and purchased intangible assets |  |  | 230,400 |  |
Non-deductible impairment of goodwill | 70,500 |  | $ 70,500 |  | $ 70,500
PCB And Component Inspection |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Impairment of goodwill and purchased intangible assets | $ 230,400 | $ 192,600 |  |  |
PCB And Component Inspection | Valuation, Income Approach |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Reporting unit, percentage of fair value | 75.00% |  | 75.00% |  |
PCB And Component Inspection | Valuation, Market Approach |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Reporting unit, percentage of fair value | 25.00% |  | 25.00% |  |
Specialty Semiconductor Process |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Impairment of goodwill and purchased intangible assets | $ 0 |  |  |  |

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