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Business Segments - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Total revenue | $ 271,842 | $ 250,231
Eliminations |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | (752) | (1,108)
Drilling & Downhole | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 85,940 | 76,864
Completions | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 94,659 | 88,054
Production | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 91,995 | 86,421
Drilling Technologies | Drilling & Downhole | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 41,926 | 42,757
Downhole Technologies | Drilling & Downhole | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 30,425 | 24,527
Subsea Technologies | Drilling & Downhole | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 13,589 | 9,580
Stimulation and Intervention | Completions | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 51,311 | 51,060
Coiled Tubing | Completions | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 43,348 | 36,994
Production Equipment | Production | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | 36,568 | 31,456
Valve Solutions | Production | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total revenue | $ 55,427 | $ 54,965

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