| Goodwill Balances | The following table presents goodwill carrying value and the movements during the three months ended September 30, 2019(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, 2019 |   | $ | 360,615 | 
 |   | $ | 25,908 | 
 |   | $ | 821,842 | 
 |   | $ | 989,918 | 
 |   | $ | 13,575 | 
 |   | $ | 2,211,858 | 
 |  
| Acquired goodwill |   | 54,001 | 
 |   | — | 
 |   | — | 
 |   | — | 
 |   | — | 
 |   | 54,001 | 
 |  
| Foreign currency and other adjustments |   | (35 | ) |   | — | 
 |   | — | 
 |   | (2,135 | ) |   | — | 
 |   | (2,170 | ) |  
| Balance as of September 30, 2019 |   | $ | 414,581 | 
 |   | $ | 25,908 | 
 |   | $ | 821,842 | 
 |   | $ | 987,783 | 
 |   | $ | 13,575 | 
 |   | $ | 2,263,689 | 
 | 
 _________________ (1) 
No goodwill was assigned to the Other reporting unit, and accordingly was excluded in the table above. 
 | 
| 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, 2019
 |   | As of June 30, 2019
 |  
| 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 |   | $ | 1,251,277 | 
 |   | $ | 232,203 | 
 |   | $ | 1,019,074 | 
 |   | $ | 1,224,629 | 
 |   | $ | 196,582 | 
 |   | $ | 1,028,047 | 
 |  
| Trade name / Trademark | 4-7 |   | 117,133 | 
 |   | 28,537 | 
 |   | 88,596 | 
 |   | 114,573 | 
 |   | 25,052 | 
 |   | 89,521 | 
 |  
| Customer relationships | 4-9 |   | 305,028 | 
 |   | 74,511 | 
 |   | 230,517 | 
 |   | 297,250 | 
 |   | 66,471 | 
 |   | 230,779 | 
 |  
| Backlog and other | <1-9 |   | 50,393 | 
 |   | 30,014 | 
 |   | 20,379 | 
 |   | 43,969 | 
 |   | 19,146 | 
 |   | 24,823 | 
 |  
| Intangible assets subject to amortization |   |   | 1,723,831 | 
 |   | 365,265 | 
 |   | 1,358,566 | 
 |   | 1,680,421 | 
 |   | 307,251 | 
 |   | 1,373,170 | 
 |  
| In-process research and development |   |   | 190,635 | 
 |   | — | 
 |   | 190,635 | 
 |   | 187,500 | 
 |   | — | 
 |   | 187,500 | 
 |  
| Total |   |   | $ | 1,914,466 | 
 |   | $ | 365,265 | 
 |   | $ | 1,549,201 | 
 |   | $ | 1,867,921 | 
 |   | $ | 307,251 | 
 |   | $ | 1,560,670 | 
 | 
 | 
| Remaining Estimated Amortization Expense | 
Based on the purchased intangible assets gross carrying amount recorded as of September 30, 2019, the underlying assets, the remaining estimated annual amortization expense is expected to be as follows:
 
|  |  
|  |  |  |  |  
| Fiscal year ending June 30: | Amortization (In thousands) |  
| 2020 (remaining 9 months) | $ | 161,422 | 
 |  
| 2021 | 194,901 | 
 |  
| 2022 | 192,323 | 
 |  
| 2023 | 191,271 | 
 |  
| 2024 | 188,714 | 
 |  
| 2025 and thereafter | 429,935 | 
 |  
| Total | $ | 1,358,566 | 
 | 
 |