| In millions, except per share items | Sep-30-11 | Jun-30-11 | Mar-31-11 | Dec-31-10 | Sep-30-10 | Jun-30-10 | Mar-31-10 | Dec-31-09 |
| | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K |
| Operating Revenues | 11.9 | 10.4 | 7.9 | 8.2 | 11.8 | 9.1 | 7.4 | 7.8 |
| Operating Revenues growth | 1.2% | 14.1% | 6.7% | 4.8% | 24.2% | 8.1% | 5.3% | -0.4% |
| Operating Expenses: | | | | | | | | |
| Operations and maintenance | 4.9 | 4.7 | | | 5.0 | 4.5 | | |
| Depreciation and amortization | 1.0 | 1.0 | | | 1.0 | 1.1 | | |
| Taxes other than income taxes | 1.1 | 1.1 | | | 1.0 | 0.9 | | |
| Total Operating Expenses | 7.0 | 6.7 | | | 7.0 | 6.5 | | |
| Operating Income | 4.9 | 3.7 | | | 4.8 | 2.6 | | |
| Operating margin | 40.9% | 35.4% | | | 40.5% | 28.8% | | |
| Eminent Domain and Merger-related Costs | -0.1 | -0.2 | | | -0.2 | -0.1 | | |
| |
| Net Loss from Investment Accounted for Under the Equity Method | | | | | | | | |
| Other Expense, Net | 0.0 | 0.0 | | | 0.0 | | | |
| Allowance for Funds Used During Construction | | 0.0 | | | 0.0 | 0.0 | | |
| Interest Income | | | | | 0.0 | 0.0 | | |
| Interest Expense | -0.8 | -0.8 | | | -0.8 | -0.9 | | |
| Income Before Provision for Income Taxes | 3.9 | 2.7 | | | 3.8 | 1.7 | | |
| Provision for Income Taxes | 1.6 | 1.1 | | | 1.5 | 0.7 | | |
| Net Income | 2.4 | 1.6 | | | 2.3 | 1.0 | | |
| |
| Other Comprehensive Loss, Net of Tax: | | | | | | | | |
| Unrealized loss on derivatives | | | | | | | | |
| Comprehensive Income | 2.1 | 1.6 | | | 2.2 | 0.8 | | |
| |
| Earnings per Common Share: | | | | | | | | |
| Basic | $0.51 | $0.35 | | | $0.49 | $0.21 | | |
| Diluted | $0.50 | $0.34 | | | $0.48 | $0.21 | | |
| |
| Weighted Average Common Shares Outstanding: | | | | | | | | |
| Basic | 4.7 | 4.7 | | | 4.7 | 4.7 | | |
| Diluted | 4.8 | 4.8 | | | 4.7 | 4.7 | | |
| |
| Dividends Paid per Common Share | $0.19 | $0.19 | | | $0.18 | $0.18 | | |