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Business Combinations - Additional Information (Details) - USD ($) $ in Thousands | Apr. 02, 2018 | Jun. 09, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
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Business Acquisition |  |  |  |  |
Goodwill |  |  | $ 354,698 | $ 349,526 | $ 335,177
Privately-held Design and Manufacturing Company |  |  |  |  |
Business Acquisition |  |  |  |  |
Total purchase consideration |  | $ 36,800 |  |  |
Goodwill |  | 14,379 |  |  |
Intangible assets |  | $ 17,660 |  |  |
Keysight Technologies, Inc. |  |  |  |  |
Business Acquisition |  |  |  |  |
Total purchase consideration | $ 12,100 |  |  |  |
Goodwill | 5,200 |  |  |  |
Intangible assets | $ 5,000 |  |  |  |

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