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Goodwill and Purchased Intangible Assets (Tables) | 9 Months Ended
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Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill Balances | The following table presents goodwill balances and the movements by reporting unit during the nine months ended March 31, 2018:
(In thousands) |  | Wafer Inspection |  | Patterning |  | GSS |  | Others |  | Total
Balance as of June 30, 2017 |  | $ | 281,095 |  |  | $ | 53,255 |  |  | $ | 2,856 |  |  | $ | 12,320 |  |  | $ | 349,526 |
Foreign currency and other adjustments |  | (12 | ) |  | — |  |  | 97 |  |  | 387 |  |  | 472 |
Balance as of March 31, 2018 |  | $ | 281,083 |  |  | $ | 53,255 |  |  | $ | 2,953 |  |  | $ | 12,707 |  |  | $ | 349,998 |
Components of Purchased Intangible Assets | The components of purchased intangible assets as of the dates indicated below were as follows:
(In thousands) |  |  | As of March 31, 2018 |  | As of June 30, 2017
Category | Range of Useful Lives |  | Gross Carrying Amount |  | Accumulated Amortization and Impairment |  | Net Amount |  | Gross Carrying Amount |  | Accumulated Amortization and Impairment |  | Net Amount
Existing technology | 4-7 years |  | $ | 157,259 |  |  | $ | 143,516 |  |  | $ | 13,743 |  |  | $ | 157,259 |  |  | $ | 140,346 |  |  | $ | 16,913 |
Trade name/Trademark | 7 years |  | 20,993 |  |  | 20,021 |  |  | 972 |  |  | 20,993 |  |  | 19,902 |  |  | 1,091 |
Customer relationships | 7-8 years |  | 55,680 |  |  | 55,061 |  |  | 619 |  |  | 55,680 |  |  | 54,959 |  |  | 721 |
Backlog | <1 year |  | 260 |  |  | 218 |  |  | 42 |  |  | 260 |  |  | 22 |  |  | 238 |
Total |  |  | $ | 234,192 |  |  | $ | 218,816 |  |  | $ | 15,376 |  |  | $ | 234,192 |  |  | $ | 215,229 |  |  | $ | 18,963 |
Remaining Estimated Amortization Expense | Based on the intangible assets recorded as of March 31, 2018, and assuming no subsequent additions to, or impairment of, the underlying assets, the remaining estimated amortization expense is expected to be as follows:
Fiscal year ending June 30: | Amortization (In thousands)
2018 (remaining 3 months) | $ | 664 |
2019 | 2,486 |
2020 | 2,486 |
2021 | 2,486 |
2022 | 2,486 |
Thereafter | 4,768 |
Total | $ | 15,376 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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