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Purchase Price at the Date of Acquisition (Detail) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Feb. 29, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Business Acquisition [Line Items] |  |  |  |
Net cash paid at acquisition |  |  | $ 40,015 | $ 122,157
Integrated Photonics, Inc |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Net cash paid at acquisition | $ 39,436 |  |  |
Cash paid for working capital adjustment | 700 |  |  |
Fair value of cash earnout arrangement | 2,250 |  |  |
Purchase price | $ 41,686 |  |  |
EpiWorks |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Net cash paid at acquisition |  | $ 42,981 |  |
Cash paid for working capital adjustment |  | 163 |  |
Fair value of cash earnout arrangement |  | 4,352 |  |
Purchase price |  | $ 47,496 |  |

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