| **Discontinued Operations - Schedule Of Loss On Sale Of Business (Details) - USD ($) $ in Thousands**                             |          |             | 3 Months Ended | 9 Months Ended |
|-----------------------------------------------------------------------------------------------------------------------------------|----------|-------------|----------------|----------------|
||
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |     |        |           |           |   |   |
| Loss on sale of discontinued operations before income taxes                                                                       |     |        | $ (195,729)    | $ 0            | $ (195,729) | $ 0 |
| Discontinued Operations, Disposed of by Sale | Fluids Systems                                                                     |     |        |           |           |   |   |
| **Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]** |     |        |           |           |   |   |
| Cash proceeds received at closing                                                                                                 |     | $ 70,187    |           |           |   |   |
| Estimated deferred consideration due from the Purchaser                                                                           | $ 20,000 | 20,031      |           |           |   |   |
| Note receivable due from the Purchaser                                                                                            |     | 5,000       |           |           |   |   |
| Estimated liabilities due to the Purchaser                                                                                        |     | (6,991)     |           |           |   |   |
| Net book value of assets sold                                                                                                     |     | (224,487)   |           |           |   |   |
| Pre-tax loss on sale excluding cumulative foreign currency translation losses                                                     |     | (136,260)   |           |           |   |   |
| Recognition of cumulative foreign currency translation losses                                                                     |     | (59,469)    | (1,529)        | 959            | (894) | 56 |
| Loss on sale of discontinued operations before income taxes                                                                       |     | $ (195,729) | $ (195,729)    | $ 0            | $ (195,729) | $ 0 |

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| - Definition
Amount before tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.
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Amount of foreign currency translation gain (loss) in the disposal group, including discontinued operation, recognized in the statement of income as a result of the sale or complete or substantially complete liquidation of an investment in a foreign entity.
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.
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