| In millions, except per share items | Dec-31-18 | Dec-31-16 | Dec-31-15 | Dec-31-14 | Dec-31-13 | Dec-31-12 | Dec-31-11 | Dec-31-10 |
| | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K | 10-K |
| Total revenues [+] | 340.1 | 284.1 | 355.4 | 561.7 | 391.4 | 255.6 | 234.6 | 92.1 |
| Oil & gas sales | | 284.1 | 355.4 | 561.7 | 391.4 | 255.6 | 231.9 | 89.3 |
| Other | | | | | | | | 1.4 |
| Revenue growth | | -20.1% | -36.7% | 43.5% | 53.1% | 8.9% | 154.7% | 270.5% |
| Cost of goods sold [+] | 138.8 | 161.2 | 203.1 | 175.6 | 119.6 | 80.1 | 65.2 | 33.7 |
| Other cost of sales | | | | | | | 2.3 | 1.2 |
| Lease costs | | 126.2 | 168.2 | 143.7 | 94.6 | | 62.9 | 32.5 |
| Natural gas midstream costs | | 35.0 | 34.9 | 31.9 | 25.1 | | | |
| Other direct costs | | | | | | | 2.3 | 1.2 |
| Gross profit | 201.3 | 122.9 | 152.3 | 386.1 | 271.8 | 175.5 | 169.4 | 58.4 |
| Gross margin | 59.2% | 43.3% | 42.8% | 68.7% | 69.4% | 68.7% | 72.2% | 63.4% |
| Selling, general and administrative [+] | 63.5 | 1.0 | 2.3 | 2.8 | 1.3 | 191.0 | 26.7 | 10.5 |
| General and administrative [+] | 63.5 | | | | | | 26.7 | 10.5 |
| General and administrative expenses | 43.1 | 63.3 | 56.7 | 49.1 | 54.9 | 30.3 | 26.7 | 10.5 |
| Operating taxes | 20.4 | | | | | | | |
| Other operating expenses [+] | 4.0 | 470.9 | 325.7 | 121.2 | 122.3 | -76.2 | -83.7 | 11.9 |
| Exploration expenses | 3.0 | 1.0 | 2.3 | 2.8 | 1.3 | 2.5 | 1.1 | 0.2 |
| EBITDA [+] | 133.9 | -177.4 | 20.1 | 448.1 | 262.0 | 136.7 | 226.4 | 35.9 |
| EBITDA growth | | -982.1% | -95.5% | 71.0% | 91.7% | -39.6% | 530.4% | 201.9% |
| EBITDA margin | 39.4% | -62.4% | 5.7% | 79.8% | 66.9% | 53.5% | 96.5% | 39.0% |
| Depreciation and amortization | 52.3 | 171.6 | 195.8 | 186.0 | 113.8 | 76.0 | 61.9 | 29.7 |
| EBIT [+] | 81.5 | -349.0 | -175.7 | 262.1 | 148.2 | 60.7 | 164.5 | 6.2 |
| EBIT growth | | 98.6% | -167.0% | 76.8% | 144.3% | -63.1% | 2546.9% | -47.7% |
| EBIT margin | 24.0% | -122.9% | -49.4% | 46.7% | 37.9% | 23.7% | 70.1% | 6.7% |
| Interest expense | 21.9 | 87.5 | 107.3 | 63.7 | 42.6 | 13.9 | 15.0 | 3.4 |
| Interest expense | 21.9 | 87.5 | 107.3 | 63.7 | 42.6 | 13.9 | 15.0 | 3.4 |
| Other income (expense), net [+] | -5.0 | -103.7 | -114.7 | -84.2 | -44.3 | | -0.6 | -0.9 |
| Reorganization items | -2.1 | | | | | | | |
| Gain (loss) on debt retirement | -3.0 | | | | | | | |
| Other | 0.2 | -103.7 | -114.7 | -84.2 | -44.3 | | -15.6 | -4.3 |
| Pre-tax income | 54.6 | -540.2 | -397.7 | 114.2 | 61.3 | 46.8 | 148.9 | 1.9 |
| Income taxes | 0.0 | 0.2 | -2.2 | -1.4 | 0.3 | 0.3 | -0.1 | -0.2 |
| Tax rate | 0.0% | | 0.5% | | 0.5% | 0.6% | | |
| Minority interest | | | | | | | 0.1 | 0.0 |
| Net income | 54.6 | -540.2 | -393.4 | 117.8 | 8.7 | 0.1 | 6.6 | 1.6 |
| Net margin | 16.1% | -190.2% | -110.7% | 21.0% | 2.2% | 0.0% | 2.8% | 1.8% |
| |
| Basic EPS [+] | $2.19 | ($6.48) | ($4.71) | $1.66 | $0.19 | $0.01 | $1.23 | |
| Growth | | 37.6% | -383.4% | 781.3% | 3465.5% | -99.6% | | |
| Diluted EPS [+] | $2.19 | ($6.48) | ($4.71) | $1.66 | $0.19 | $0.01 | $0.40 | |
| Growth | | 37.6% | -383.4% | 781.3% | 3465.5% | -98.7% | | |
| |
| Dividends per share [+] | | $0.16 | $1.95 | $2.19 | $2.10 | $1.51 | | |
| Growth | | -91.8% | -10.6% | 4.1% | 39.5% | | | |
| |
| Shares outstanding (basic) [+] | 25.0 | 83.4 | 83.5 | 70.9 | 46.0 | 22.9 | 5.4 | |
| Growth | | -0.2% | 17.9% | 54.0% | 101.1% | 326.8% | | |
| Shares outstanding (diluted) [+] | 25.0 | 83.4 | 83.5 | 70.9 | 46.0 | 22.9 | 16.4 | |
| Growth | | -0.2% | 17.9% | 54.0% | 101.1% | 39.6% | | |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |