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Acquired Intangibles and Goodwill | 3 Months Ended
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Sep. 30, 2018
Goodwill And Intangible Assets Disclosure [Abstract] |
Acquired Intangibles and Goodwill | 6. Acquired Intangibles and Goodwill Acquired Intangibles The following table summarizes the life, the gross carrying value and the related accumulated amortization of our acquired intangible assets as of September 30, 2018 and June 30, 2018 (in millions):
|  |  |  |  |  | September 30, 2018 |  |  | June 30, 2018 |
|  | Weighted Average Life in Years |  |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Value |  |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Value |
Display driver technology |  |  | 5.3 |  |  | $ | 164.0 |  | $ | (124.4 | ) | $ | 39.6 |  |  | $ | 164.0 |  | $ | (116.5 | ) | $ | 47.5 |
Audio and video technology |  |  | 5.5 |  |  |  | 133.9 |  |  | (29.4 | ) |  | 104.5 |  |  |  | 133.9 |  |  | (22.8 | ) |  | 111.1 |
Fingerprint authentication technology |  |  | 4.7 |  |  |  | 47.2 |  |  | (47.2 | ) |  | - |  |  |  | 55.7 |  |  | (53.7 | ) |  | 2.0 |
Customer relationships |  |  | 4.1 |  |  |  | 81.8 |  |  | (41.3 | ) |  | 40.5 |  |  |  | 81.8 |  |  | (38.5 | ) |  | 43.3 |
Licensed technology and other |  |  | 4.2 |  |  |  | 7.7 |  |  | (2.1 | ) |  | 5.6 |  |  |  | 9.0 |  |  | (3.0 | ) |  | 6.0 |
Tradename |  |  | 7.0 |  |  |  | 1.8 |  |  | (0.2 | ) |  | 1.6 |  |  |  | 1.9 |  |  | (0.2 | ) |  | 1.7 |
Patents |  |  | 8.1 |  |  |  | 4.4 |  |  | (1.7 | ) |  | 2.7 |  |  |  | 4.6 |  |  | (1.7 | ) |  | 2.9 |
Backlog |  | - |  |  |  | - |  |  | - |  |  | - |  |  |  | 0.5 |  |  | (0.5 | ) |  | - |
In-process research and development |  | Not applicable |  |  |  | 4.7 |  |  | - |  |  | 4.7 |  |  |  | 4.7 |  |  | - |  |  | 4.7 |
Acquired intangibles, gross |  |  | 5.0 |  |  | $ | 445.5 |  | $ | (246.3 | ) | $ | 199.2 |  |  | $ | 456.1 |  | $ | (236.9 | ) | $ | 219.2 |
The total amortization expense for the acquired intangible assets was $20.0 million and $20.1 million for the three months ended September 30, 2018 and 2017, respectively. During the three months ended September 30, 2018 and 2017, $17.0 million and $16.0 million, respectively, of amortization expense was included in our condensed consolidated statements of operations in cost of revenue; the remainder was included in acquired intangibles amortization. The following table presents expected annual fiscal year aggregate amortization expense as of September 30, 2018 (in millions):
Remainder of 2019 |  | $ | 54.0 |
2020 |  |  | 50.4 |
2021 |  |  | 36.5 |
2022 |  |  | 32.0 |
2023 |  |  | 19.5 |
2024 |  |  | 2.0 |
Thereafter |  |  | 0.1 |
To be determined |  |  | 4.7 |
Future amortization |  | $ | 199.2 |
Goodwill Goodwill represents the excess of the purchase price over the fair value of net tangible and identifiable intangible assets acquired. There were no changes in our goodwill balance for the three months ended September 30, 2018.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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