GOODWILL AND PURCHASED INTANGIBLE ASSETS (Tables)
   | 
12 Months Ended | 
Jun. 30, 2021  | 
| Goodwill and Intangible Assets Disclosure [Abstract] | 
 
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| Schedule of Goodwill Rollforward | 
The following table presents goodwill carrying value and the movements by reporting unit during the fiscal years ended June 30, 2021 and 2020(1): 
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| (In thousands) | 
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Wafer Inspection and Patterning | 
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Global Service and Support (“GSS”)  | 
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Specialty Semiconductor Process | 
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PCB and Display  | 
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Component Inspection | 
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Total | 
 
| Balance as of June 30, 2019 | 
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$ | 
360,615  | 
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$ | 
25,908  | 
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$ | 
821,842  | 
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$ | 
989,918  | 
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$ | 
13,575  | 
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$ | 
2,211,858  | 
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| Acquired goodwill | 
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56,180  | 
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—  | 
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—  | 
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—  | 
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—  | 
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56,180  | 
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| Goodwill adjustments | 
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166  | 
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—  | 
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4,195  | 
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29,773  | 
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—  | 
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34,134  | 
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| Goodwill impairment | 
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—  | 
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—  | 
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(144,179) | 
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(112,470) | 
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—  | 
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(256,649) | 
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| Foreign currency adjustment | 
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(121) | 
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—  | 
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—  | 
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—  | 
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—  | 
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(121) | 
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| Balance as of June 30, 2020 | 
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416,840  | 
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25,908  | 
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681,858  | 
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907,221  | 
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13,575  | 
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2,045,402  | 
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Goodwill disposal from sale of business(2)
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—  | 
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—  | 
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—  | 
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(34,250) | 
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—  | 
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(34,250) | 
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| Foreign currency adjustment | 
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20  | 
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—  | 
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—  | 
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—  | 
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—  | 
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20  | 
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| Balance as of June 30, 2021 | 
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$ | 
416,860  | 
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$ | 
25,908  | 
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$ | 
681,858  | 
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$ | 
872,971  | 
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$ | 
13,575  | 
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$ | 
2,011,172  | 
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_________________ 
(1)No goodwill was assigned to the Other reporting unit, and accordingly is not disclosed in the table above. 
 
(2)Refer to the Non-controlling Interest section of Note 10 “Equity, Long-term Incentive Compensation Plans and Non-Controlling Interest” for more information on the sale of PixCell Medical Technologies Ltd. (“PixCell”).
 
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| Schedule of Purchased Intangible Assets | 
 The components of purchased intangible assets as of the dates indicated below were as follows: 
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| (In thousands) | 
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As of June 30, 2021 | 
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As of June 30, 2020 | 
 
| Category  | 
Range of Useful Lives (in years) | 
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Gross Carrying Amount | 
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Accumulated Amortization and Impairment | 
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Net Amount | 
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Gross Carrying Amount | 
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Accumulated Amortization and Impairment | 
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Net Amount | 
 
| Existing technology | 
4-8  | 
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$ | 
1,382,612  | 
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$ | 
499,219  | 
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$ | 
883,393  | 
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$ | 
1,269,883  | 
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$ | 
342,623  | 
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$ | 
927,260  | 
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| Customer relationships | 
4-9  | 
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305,817  | 
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131,386  | 
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174,431  | 
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305,817  | 
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98,754  | 
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207,063  | 
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| Trade name/trademark | 
4-7  | 
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117,383  | 
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53,493  | 
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63,890  | 
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117,383  | 
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39,216  | 
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78,167  | 
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| Backlog and other | 
<1-9  | 
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50,403  | 
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49,962  | 
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441  | 
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50,404  | 
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47,215  | 
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3,189  | 
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| Intangible assets subject to amortization | 
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1,856,215  | 
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734,060  | 
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1,122,155  | 
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1,743,487  | 
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527,808  | 
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1,215,679  | 
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| In-process research and development | 
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63,256  | 
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100  | 
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63,156  | 
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175,834  | 
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100  | 
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175,734  | 
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| Total | 
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$ | 
1,919,471  | 
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$ | 
734,160  | 
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$ | 
1,185,311  | 
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$ | 
1,919,321  | 
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$ | 
527,908  | 
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$ | 
1,391,413  | 
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| Schedule of Amortization Expense for Purchased Intangible Assets | 
 Amortization expense for purchased intangible assets for the periods indicated below was as follows: 
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Year Ended June 30, | 
 
| (In thousands) | 
2021 | 
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2020 | 
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2019 | 
 
| Amortization expense - Cost of revenues | 
$ | 
156,596  | 
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$ | 
145,823  | 
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$ | 
52,387  | 
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| Amortization expense - Selling, general and administrative | 
49,531  | 
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74,532  | 
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34,992  | 
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| Amortization expense - Research and development | 
125  | 
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224  | 
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13  | 
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| Total  | 
$ | 
206,252  | 
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$ | 
220,579  | 
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$ | 
87,392  | 
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| Schedule of Remaining Estimated Amortization Expense | 
 Based on the purchased intangible assets’ gross carrying value recorded as of June 30, 2021, the remaining estimated annual amortization expense is expected to be as follows:  
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| Fiscal Year Ending June 30: | 
Amortization (In thousands) | 
 
| 2022 | 
$ | 
209,349  | 
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| 2023 | 
208,257  | 
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| 2024 | 
205,740  | 
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| 2025 | 
193,521  | 
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| 2026 | 
178,346  | 
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| Thereafter | 
126,942  | 
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| Total | 
$ | 
1,122,155  | 
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