| **Divestitures and Other Exit Activities (Details) - USD ($) $ in Thousands** | 3 Months Ended | 6 Months Ended |          |
|-------------------------------------------------------------------------------|----------------|----------------|----------|
||
| **Business Acquisition [Line Items]**                                         |           |           |     |
| Cash and cash equivalents                                                     | $ 35,087       | $ 35,087       | $ 38,594 |
| Long-term debt                                                                | 57,983         | 57,983         | $ 75,033 |
| Fluids Systems                                                                |           |           |     |
| **Business Acquisition [Line Items]**                                         |           |           |     |
| Sales-process related costs                                                   | 1,900          | 4,100          |     |
| Net assets                                                                    | 210,000        | 210,000        |     |
| Cash and cash equivalents                                                     | 31,000         | 31,000         |     |
| Long-term debt                                                                | 12,000         | 12,000         |     |
| Net working capital                                                           | 160,000        | 160,000        |     |
| Accumulated translation losses                                                | $ 63,000       | 63,000         |     |
| Business exit costs                                                           |           | $ 700          |     |

| X                                                                                                                                                                                                                      |
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Net Working Capital
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Sales-process Related Costs
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Amount of net assets (liabilities).
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| - Definition
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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| - Definition
Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.
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| - Definition
Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.
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| - Definition
Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.
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| - Definition
Amount of cumulative translation gain (loss), after tax, from translating foreign currency financial statements into the reporting currency.
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