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Related Party Transactions (Details) - Energy Micro - USD ($) $ in Millions | Jul. 01, 2013 | Dec. 31, 2016
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Related Party Transaction |  |
Contingent consideration | $ 26.7 |
Mr. Forre |  |
Related Party Transaction |  |
Beneficial ownership percentage | 30.00% |
Contingent consideration |  | $ 4.8
Mr. Bogen |  |
Related Party Transaction |  |
Beneficial ownership percentage | 2.00% |
Cash consideration | $ 0.3 |

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