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Acquisitions - 2018 Acquisitions (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Oct. 03, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Acquisitions |  |  |
Cash paid for acquisitions of businesses |  | $ 2,929 | $ 25,000
Goodwill |  | $ 28,380 | $ 183,914
PetroMar Technologies |  |  |
Acquisitions |  |  |
Cash paid for acquisitions of businesses | $ 25,000 |  |
Recorded intangible assets | 36,200 |  |
Goodwill | 11,400 |  |
Other liabilities | 22,600 |  |
Liabilities: |  |  |
Other long-term liabilities | 22,600 |  |
PetroMar Technologies | Developed Technology |  |  |
Acquisitions |  |  |
Recorded intangible assets | 13,700 |  |
PetroMar Technologies | Trade Names |  |  |
Acquisitions |  |  |
Recorded intangible assets | 800 |  |
PetroMar Technologies | In Process Research and Development |  |  |
Acquisitions |  |  |
Recorded intangible assets | $ 21,700 |  |

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