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Quarterly Data - Unaudited (Tables) | 12 Months Ended
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Dec. 31, 2022
Quarterly Data - Unaudited [Abstract] |
Schedule of financial information for each quarter |
|  | (Thousands of Dollars, Except per Share Data) |
2022 |  | 1st |  |  | 2nd |  |  | 3rd |  |  | 4th |  |  | Total |
Operating Revenues |  | $ | 36,196 |  |  | $ | 39,683 |  |  | $ | 47,732 |  |  | $ | 38,823 |  |  | $ | 162,434 |
Gain on Sale of Subsidiary |  |  | 5,232 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5,232 |
Operating Income |  |  | 12,523 |  |  |  | 10,088 |  |  |  | 16,575 |  |  |  | 8,146 |  |  |  | 47,332 |
Net Income |  |  | 12,100 |  |  |  | 8,868 |  |  |  | 14,291 |  |  |  | 7,169 |  |  |  | 42,428 |
Basic Earnings per Share |  | $ | 0.69 |  |  | $ | 0.50 |  |  | $ | 0.81 |  |  | $ | 0.40 |  |  | $ | 2.40 |
Diluted Earnings per Share |  | $ | 0.68 |  |  | $ | 0.50 |  |  | $ | 0.81 |  |  | $ | 0.40 |  |  | $ | 2.39 |
Common Dividend Per Share |  | $ | 0.2900 |  |  | $ | 0.2900 |  |  | $ | 0.2900 |  |  | $ | 0.3125 |  |  | $ | 1.1825 |
High/Low Common Stock Price |  |  | $94.56/$121.10 |  |  |  | $75.77/$108.27 |  |  |  | $77.08/$96.19 |  |  |  | $74.20/$95.82 |  |  |  |  |
2021 |  | 1st |  |  | 2nd |  |  | 3rd |  |  | 4th |  |  | Total |
Operating Revenues |  | $ | 32,541 |  |  | $ | 36,701 |  |  | $ | 39,874 |  |  | $ | 34,025 |  |  | $ | 143,141 |
Operating Income |  |  | 5,634 |  |  |  | 9,814 |  |  |  | 11,424 |  |  |  | 6,339 |  |  |  | 33,211 |
Net Income |  |  | 6,907 |  |  |  | 10,923 |  |  |  | 11,476 |  |  |  | 7,237 |  |  |  | 36,543 |
Basic Earnings per Share |  | $ | 0.39 |  |  | $ | 0.62 |  |  | $ | 0.65 |  |  | $ | 0.42 |  |  | $ | 2.08 |
Diluted Earnings per Share |  | $ | 0.39 |  |  | $ | 0.62 |  |  | $ | 0.65 |  |  | $ | 0.41 |  |  | $ | 2.07 |
Common Dividend Per Share |  | $ | 0.2725 |  |  | $ | 0.2725 |  |  | $ | 0.2725 |  |  | $ | 0.2900 |  |  | $ | 1.1075 |
High/Low Common Stock Price |  |  | $85.92/$67.09 |  |  |  | $88.61/$77.31 |  |  |  | $116.40/$81.02 |  |  |  | $119.37/$98.12 |  |  |  |  |

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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 https://asc.fasb.org/extlink&oid=126900988&loc=d3e1280-108306 + Details
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