Overview Financials News + Filings Key Docs Charts Ownership Insiders
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| In millions, except per share items | Dec-31-18 | Dec-31-17 | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 | Dec-31-12 | Dec-31-11 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Drilling Services revenues | 225.1 | 259.6 | 292.8 | 465.5 | | | | |
| Revenue growth | -13.3% | -11.3% | -37.1% | | | | | |
| Gross profit | -37.7 | -26.9 | -25.1 | 16.9 | | | | |
| Gross margin | -16.7% | -10.4% | -8.6% | 3.6% | | | | |
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| Revenue Mix | 46.8% | 58.7% | 68.6% | 65.4% | | | | |
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