| Schedule of Goodwill Balances | The following table presents changes in goodwill carrying value during the three months ended September 30, 2021(1): 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
| (In thousands) | Wafer Inspection and Patterning |  | 
Global Service and Support (“GSS”)
 |  | Specialty Semiconductor Process |  | PCB and Display |  | Component Inspection |  | Total |  
| Balance as of June 30, 2021 | $ | 416,860 |  |  | $ | 25,908 |  |  | $ | 681,858 |  |  | $ | 872,971 |  |  | $ | 13,575 |  |  | $ | 2,011,172 |  |  
| Acquired goodwill | 30,164 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 30,164 |  |  
|  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  |  |  |  |  |  |  |  |  |  |  |  
| Foreign currency adjustments | 2 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | 2 |  |  
| Balance as of September 30, 2021 | $ | 447,026 |  |  | $ | 25,908 |  |  | $ | 681,858 |  |  | $ | 872,971 |  |  | $ | 13,575 |  |  | $ | 2,041,338 |  | _________________ 
(1)No goodwill was assigned to the Other reporting unit and, accordingly, it was excluded from the table above.
 | 
| Schedule of Components of Purchased Intangible Assets | The components of purchased intangible assets as of the dates indicated below were as follows: 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
| (In thousands) |  |  | As of September 30, 2021 |  | As of June 30, 2021 |  
| Category | Range of Useful  Lives (in years) |  | Gross Carrying
 Amount
 |  | Accumulated Amortization
 and
 Impairment
 |  | Net Amount
 |  | Gross Carrying
 Amount
 |  | Accumulated Amortization
 and
 Impairment
 |  | Net Amount
 |  
| Existing technology | 4-8 |  | $ | 1,400,191 |  |  | $ | 540,125 |  |  | $ | 860,066 |  |  | $ | 1,382,612 |  |  | $ | 499,219 |  |  | $ | 883,393 |  |  
| Customer relationships | 4-9 |  | 313,317 |  |  | 139,919 |  |  | 173,398 |  |  | 305,817 |  |  | 131,386 |  |  | 174,431 |  |  
| Trade name / Trademark | 4-7 |  | 117,983 |  |  | 57,100 |  |  | 60,883 |  |  | 117,383 |  |  | 53,493 |  |  | 63,890 |  |  
| Backlog and other | <1-9 |  | 51,836 |  |  | 50,242 |  |  | 1,594 |  |  | 50,403 |  |  | 49,962 |  |  | 441 |  |  
| Intangible assets subject to amortization |  |  | 1,883,327 |  |  | 787,386 |  |  | 1,095,941 |  |  | 1,856,215 |  |  | 734,060 |  |  | 1,122,155 |  |  
| In-process research and development |  |  | 67,656 |  |  | 6,062 |  |  | 61,594 |  |  | 63,256 |  |  | 100 |  |  | 63,156 |  |  
| Total |  |  | $ | 1,950,983 |  |  | $ | 793,448 |  |  | $ | 1,157,535 |  |  | $ | 1,919,471 |  |  | $ | 734,160 |  |  | $ | 1,185,311 |  |  | 
| Schedule of Amortization Expense for Purchased Intangible Assets | Amortization expense for purchased intangible assets for the periods indicated below was as follows:  
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  | Three Months Ended September 30, |  |  |  
| (In thousands) | 2021 |  | 2020 |  |  |  |  |  
| Amortization expense - Costs of revenues | $ | 41,124 |  |  | $ | 37,040 |  |  |  |  |  |  
| Amortization expense - Selling, general and administrative | 12,389 |  |  | 13,429 |  |  |  |  |  |  
| Amortization expense - Research and development | 31 |  |  | 31 |  |  |  |  |  |  
| Total | $ | 53,544 |  |  | $ | 50,500 |  |  |  |  |  |  | 
| Schedule of Remaining Estimated Amortization Expense | Based on the purchased intangible assets gross carrying amount recorded as of September 30, 2021, the remaining estimated annual amortization expense is expected to be as follows: 
|  |  |  |  |  |  |  
| Fiscal year ending June 30: | Amortization (In thousands) |  
| 2022 (remaining nine months) | $ | 160,633 |  |  
| 2023 | 212,609 |  |  
| 2024 | 209,615 |  |  
| 2025 | 197,396 |  |  
| 2026 | 182,071 |  |  
| 2027 and thereafter | 133,617 |  |  
| Total | $ | 1,095,941 |  |  |