| Operating revenues | |
| Operating revenues | 632.92M |
| Purchased gas cost | |
| Purchased gas cost | |
| Gross profit | 407.31M |
| Operating expenses | |
| Operation and maintenance | 137.44M |
| Depreciation and amortization | 73.46M |
| Taxes, other than income | 59.24M |
| Asset impairments | |
| Total operating expenses | 270.15M |
| Operating income | 137.16M |
| Miscellaneous income (expense) | 833K |
| Interest charges | 27.7M |
| Income (loss) before income taxes | 110.3M |
| Income tax expense (benefit) | 39.11M |
| Income (loss) from continuing operations | |
| Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax | |
| Net income (loss) | 71.19M |
| Income Loss From Continuing Operations Per Basic Share | |
| Income Loss From Discontinued Operations Net Of Tax Per Basic Share | |
| Basic net income (loss) per share | |
| Income Loss From Continuing Operations Per Diluted Share | |
| Income Loss From Discontinued Operations Net Of Tax Per Diluted Share | |
| Diluted net income (loss) per share | |
| Cash dividends per share | 0.42 |
| Basic | |
| Diluted | |
| Operating revenues | |
| Operating revenues | 414.23M |
| Purchased gas cost | |
| Purchased gas cost | |
| Gross profit | 275.38M |
| Operating expenses | |
| Operation and maintenance | 100.86M |
| Depreciation and amortization | 58.92M |
| Taxes, other than income | 52.38M |
| Asset impairments | |
| Total operating expenses | 212.15M |
| Operating income | 63.23M |
| Miscellaneous income (expense) | 1.11M |
| Interest charges | 18.97M |
| Income (loss) before income taxes | 45.37M |
| Income tax expense (benefit) | 15.52M |
| Income (loss) from continuing operations | |
| Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax | |
| Net income (loss) | 29.86M |
| Operating revenues | |
| Operating revenues | 109.25M |
| Purchased gas cost | |
| Purchased gas cost | |
| Gross profit | 109.25M |
| Operating expenses | |
| Operation and maintenance | 29.08M |
| Depreciation and amortization | 13.41M |
| Taxes, other than income | 6.22M |
| Asset impairments | |
| Total operating expenses | 48.71M |
| Operating income | 60.54M |
| Miscellaneous income (expense) | -359K |
| Interest charges | 9M |
| Income (loss) before income taxes | 51.18M |
| Income tax expense (benefit) | 18.05M |
| Income (loss) from continuing operations | |
| Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax | |
| Net income (loss) | 33.13M |
| Operating revenues | |
| Operating revenues | 214.56M |
| Purchased gas cost | |
| Purchased gas cost | |
| Gross profit | 22.81M |
| Operating expenses | |
| Operation and maintenance | 7.64M |
| Depreciation and amortization | 1.13M |
| Taxes, other than income | 647K |
| Asset impairments | |
| Total operating expenses | 9.42M |
| Operating income | 13.4M |
| Miscellaneous income (expense) | 574K |
| Interest charges | 221K |
| Income (loss) before income taxes | 13.75M |
| Income tax expense (benefit) | 5.54M |
| Income (loss) from continuing operations | |
| Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax | |
| Net income (loss) | 8.21M |
| Operating revenues | |
| Operating revenues | -105.11M |
| Purchased gas cost | |
| Purchased gas cost | |
| Gross profit | -133K |
| Operating expenses | |
| Operation and maintenance | -133K |
| Depreciation and amortization | 0 |
| Taxes, other than income | 0 |
| Asset impairments | |
| Total operating expenses | -133K |
| Operating income | 0 |
| Miscellaneous income (expense) | -493K |
| Interest charges | -493K |
| Income (loss) before income taxes | 0 |
| Income tax expense (benefit) | 0 |
| Income (loss) from continuing operations | |
| Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax | |
| Net income (loss) | 0 |