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Acquisitions Fair Value Reconciliation (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Assets Impaired | $ 8,500 |  | $ 8,500 |
Fair value adjustment | (1,215) | $ (2,100) | (2,757) | $ (2,100)
Quickthree Technology LLC | Contingent Consideration |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Balance as of January 1, 2018 |  |  | 7,167 |
Payment of contingent consideration |  |  | (1,610) |
Balance as of September 30, 2018 | $ 2,800 |  | $ 2,800 |

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