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Capitalization (Tables) | 12 Months Ended
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Dec. 31, 2016
CAPITALIZATION: |
Schedule of maturities of long term debt |
Year |  |  | (Millions of Dollars) Annual Maturities |
| 2017 |  |  | $ | 6.2 |
| 2018 |  |  | $ | 6.6 |
| 2019 |  |  | $ | 6.6 |
| 2020 |  |  | $ | 6.4 |
| 2021 |  |  | $ | 6.4 |
Schedule of earnings per share |
|  | (In Thousands, Except Per Share Amounts)
|  | 2016 |  | 2015 |  | 2014
Basic: |  | Income |  | Shares |  | Income |  | Shares |  | Income |  | Shares
Net Income |  | $ | 22,742 |  |  |  | 16,270 |  |  | $ | 20,028 |  |  |  | 16,175 |  |  | $ | 18,445 |  |  |  | 16,052 |
Preferred Dividend |  |  | (144 | ) |  |  |  |  |  |  | (144 | ) |  |  |  |  |  |  | (151 | ) |  |  |  |
Earnings Applicable to Common Stock |  | $ | 22,598 |  |  |  | 16,270 |  |  | $ | 19,884 |  |  |  | 16,175 |  |  | $ | 18,294 |  |  |  | 16,052 |
Basic EPS |  | $ | 1.39 |  |  |  |  |  |  | $ | 1.23 |  |  |  |  |  |  | $ | 1.14 |  |  |  |  |
Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings Applicable to Common Stock |  | $ | 22,598 |  |  |  | 16,270 |  |  | $ | 19,884 |  |  |  | 16,175 |  |  | $ | 18,294 |  |  |  | 16,052 |
$7.00 Series Dividend |  |  | 67 |  |  |  | 115 |  |  |  | 67 |  |  |  | 115 |  |  |  | 74 |  |  |  | 133 |
$8.00 Series Dividend |  |  | 24 |  |  |  | 41 |  |  |  | 24 |  |  |  | 41 |  |  |  | 24 |  |  |  | 41 |
Adjusted Earnings Applicable to Common Stock |  | $ | 22,689 |  |  |  | 16,426 |  |  | $ | 19,975 |  |  |  | 16,331 |  |  | $ | 18,392 |  |  |  | 16,226 |
Diluted EPS |  | $ | 1.38 |  |  |  |  |  |  | $ | 1.22 |  |  |  |  |  |  | $ | 1.13 |  |  |  |  |
Schedule of carrying amount and estimated fair value of bonds |
|  | (Thousands of Dollars)
|  | At December 31,
|  | 2016 |  | 2015
|  | Carrying |  | Fair |  | Carrying |  | Fair
|  | Amount |  | Value |  | Amount |  | Value
Bonds |  | $ | 82,786 |  |  | $ | 84,821 |  |  | $ | 85,600 |  |  | $ | 88,431 |

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