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Quarterly Financial Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Quarterly Financial Information |
|  | Three Months Ended |
|  | March 31, |  |  | June 30, |  |  | September 30, |  |  | December 31, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Total Operating Revenues |  | $ | 145.8 |  |  | $ | 126.0 |  |  | $ | 84.5 |  |  | $ | 80.8 |  |  | $ | 88.2 |  |  | $ | 84.0 |  |  | $ | 125.6 |  |  | $ | 115.4 |
Operating Income |  | $ | 28.1 |  |  | $ | 27.7 |  |  | $ | 10.6 |  |  | $ | 11.6 |  |  | $ | 10.3 |  |  | $ | 10.4 |  |  | $ | 22.2 |  |  | $ | 25.7 |
Net Income Applicable to Common |  | $ | 15.6 |  |  | $ | 12.4 |  |  | $ | 3.6 |  |  | $ | 3.1 |  |  | $ | 2.8 |  |  | $ | 2.3 |  |  | $ | 11.0 |  |  | $ | 11.2 |
|  | Per Share Data: |
Earnings Per Common Share |  | $ | 1.06 |  |  | $ | 0.88 |  |  | $ | 0.24 |  |  | $ | 0.23 |  |  | $ | 0.19 |  |  | $ | 0.16 |  |  | $ | 0.74 |  |  | $ | 0.79 |
Dividends Paid Per Common Share |  | $ | 0.365 |  |  | $ | 0.360 |  |  | $ | 0.365 |  |  | $ | 0.360 |  |  | $ | 0.365 |  |  | $ | 0.360 |  |  | $ | 0.365 |  |  | $ | 0.360 |

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109225645&loc=d3e1280-108306 + Details
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