| In millions, except per share items | Dec-31-19 | 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 |
| Revenues: |
| Oil, natural gas and natural gas liquids revenues | 112.9 | | | | | | | |
| Natural Gas Product | 60.0 | | | | | | | |
| Oil Product | 32.0 | | | | | | | |
| Natural Gas Liquids Product | 20.4 | | | | | | | |
| Total revenues [+] | 113.8 | 225.7 | 184.9 | 178.0 | 339.4 | 315.3 | 285.5 | 261.8 |
| Oil & gas sales | | 223.3 | | 175.1 | 334.7 | 310.9 | 281.7 | 256.4 |
| Natural gas midstream | | 2.4 | | 2.9 | 4.7 | 4.4 | 3.7 | 5.5 |
| Revenue growth | | 22.1% | 3.9% | -47.6% | 7.6% | 10.4% | 9.0% | 52.7% |
| Cost of goods sold [+] | 5.6 | 112.2 | 103.4 | 106.4 | 105.8 | 104.5 | 103.6 | 74.4 |
| Lease costs | | 101.6 | | 99.6 | | | | |
| Direct taxes | | 10.6 | | 6.8 | | | | |
| Gross profit | 108.2 | 113.5 | 81.5 | 71.6 | 233.6 | 210.8 | 181.9 | 187.4 |
| Gross margin | 95.1% | 50.3% | 44.1% | 40.2% | 68.8% | 66.9% | 63.7% | 71.6% |
| Selling, general and administrative [+] | 26.8 | 32.3 | 131.9 | 39.0 | 45.0 | 40.7 | 42.7 | 35.0 |
| General and administrative | 26.8 | 32.3 | | 39.0 | 45.0 | 40.7 | 42.7 | 35.0 |
| Equity in earnings | | | | | | | 0.0 | |
| Other operating expenses [+] | 86.7 | 8.8 | 61.1 | 11.9 | 107.7 | 66.1 | 59.9 | 38.4 |
| Exploration expenses | 0.1 | 0.4 | 0.7 | 3.7 | 6.7 | 2.4 | 6.8 | 12.1 |
| EBITDA [+] | -5.3 | 72.4 | 7.7 | 20.6 | 81.0 | 104.1 | 79.4 | 114.1 |
| EBITDA growth | | 842.7% | -62.7% | -74.5% | -22.2% | 31.2% | -30.4% | -4.4% |
| EBITDA margin | -4.6% | 32.1% | 4.2% | 11.6% | 23.9% | 33.0% | 27.8% | 43.6% |
| Depreciation and amortization | 11.7 | 96.9 | 119.2 | 106.0 | 106.1 | 113.8 | 113.4 | 74.7 |
| EBIT [+] | -16.9 | -24.5 | -111.5 | -85.3 | -25.1 | -9.7 | -34.0 | 39.3 |
| EBIT growth | | -78.1% | 30.6% | 239.7% | 158.9% | -71.5% | -186.5% | -38.7% |
| EBIT margin | -14.9% | -10.8% | -60.3% | -48.0% | -7.4% | -3.1% | -11.9% | 15.0% |
| Non-recurring items [+] | 129.1 | 93.6 | 131.3 | 202.6 | | | | |
| Asset impairment | 129.1 | 93.6 | 131.3 | 202.6 | | | | |
| Interest expense | 3.5 | 40.9 | | 50.3 | 52.6 | 49.1 | 48.7 | 30.6 |
| Interest expense | 3.5 | 40.9 | 42.5 | 50.3 | 52.6 | 49.1 | 48.7 | 30.6 |
| Other income (expense), net [+] | 11.2 | 24.6 | 40.0 | 102.2 | 100.4 | -16.7 | 67.4 | 94.2 |
| Gain (loss) on debt retirement | | | | 24.0 | | | | |
| Gain (loss) on derivative instruments | 3.1 | 22.9 | | 78.1 | 99.7 | -17.3 | 66.7 | 93.9 |
| Other | 3.5 | 1.7 | -2.5 | 0.1 | 0.7 | 0.5 | 0.7 | 0.3 |
| Pre-tax income | -138.3 | -134.4 | -245.3 | -236.0 | 22.7 | -75.5 | -15.3 | 103.0 |
| Income taxes | 0.0 | -0.2 | 2.4 | -1.8 | 0.5 | 0.1 | 1.1 | 0.4 |
| Tax rate | | 0.2% | | 0.8% | 2.1% | | | 0.3% |
| Earnings from continuing ops | 0.0 | -131.5 | 0.0 | -235.7 | 17.9 | -76.1 | -16.0 | 91.8 |
| Earnings from discontinued ops | | | | 255.5 | 107.5 | -0.6 | | |
| Net income | 0.0 | -131.5 | 0.0 | 19.8 | 125.4 | -76.7 | -16.0 | 91.8 |
| Net margin | 0.0% | -58.3% | 0.0% | 11.1% | 36.9% | -24.3% | -5.6% | 35.0% |
| |
| Basic EPS [+] | $0.00 | ($2.66) | $0.00 | ($4.82) | $0.37 | ($1.74) | ($0.38) | $2.71 |
| Growth | | 2694714054.3% | -100.0% | -1406.9% | -121.2% | 356.1% | -114.1% | -19.2% |
| Diluted EPS [+] | $0.00 | ($2.66) | $0.00 | ($4.82) | $0.37 | ($1.74) | ($0.38) | $2.68 |
| Growth | | 2694714054.3% | -100.0% | -1406.9% | -121.2% | 356.1% | -114.2% | -19.7% |
| |
| Dividends per share [+] | $7.05 | | $0.08 | $1.58 | $2.82 | $3.08 | $3.06 | $3.40 |
| Growth | | -100.0% | -95.0% | -44.1% | -8.4% | 0.5% | -9.8% | 2.7% |
| |
| Shares outstanding (basic) [+] | 10.1 | 49.4 | 49.0 | 48.9 | 48.6 | 43.7 | 42.0 | 33.9 |
| Growth | | 0.6% | 0.4% | 0.6% | 11.2% | 4.1% | 23.8% | 20.6% |
| Shares outstanding (diluted) [+] | 10.1 | 49.4 | 49.0 | 48.9 | 48.6 | 43.7 | 42.0 | 34.2 |
| Growth | | 0.6% | 0.4% | 0.6% | 11.2% | 4.1% | 22.7% | 21.4% |
| |
| EBIT is a non-GAAP figure that excludes all non-recurring expenses: restructuring costs, asset impairments, IPR&D writeoffs, and other unusual charges. |