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Purchase Price at the Date of Acquisition (Detail) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2017 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
Business Acquisition [Line Items] |  |  |  |  |
Net cash paid at acquisition |  |  | $ 80,503 | $ 40,015 | $ 122,157
Working capital adjustment | $ 200 |  |  |  |
Integrated Photonics, Inc |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Net cash paid at acquisition |  | $ 40,098 |  |  |
Working capital adjustment |  | 848 |  |  |
Fair value of cash earnout arrangement |  | 2,215 |  |  |
Purchase price |  | $ 43,161 |  |  |

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