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v3.3.1.900

Business Segment Data (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Sep. 30, 2014 USD ($) | Jun. 30, 2014 USD ($) | Mar. 31, 2014 USD ($) | Dec. 31, 2015 USD ($) N | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of Reportable Segments | N |  |  |  |  |  |  |  |  | 2 |  |
Revenues | $ 30,925 | $ 34,654 | $ 31,666 | $ 28,780 | $ 28,107 | $ 32,669 | $ 29,190 | $ 27,173 | $ 126,025 | $ 117,139 | $ 114,846
Operating Income | 8,460 | 11,460 | 9,235 | 6,685 | 8,058 | 11,620 | 8,747 | 5,967 | 35,840 | 34,392 | 30,970
Depreciation |  |  |  |  |  |  |  |  | 12,051 | 11,444 | 10,988
Other Income (Expense), Net |  |  |  |  |  |  |  |  | 293 | (403) | 91
Interest Expense |  |  |  |  |  |  |  |  | 5,554 | 5,607 | 5,807
Income Taxes |  |  |  |  |  |  |  |  | 10,551 | 9,937 | 8,621
Net Income | 4,560 | $ 6,743 | $ 5,089 | $ 3,636 | 3,790 | $ 6,758 | $ 4,728 | $ 3,169 | 20,028 | 18,445 | 16,633
Capital Expenditures |  |  |  |  |  |  |  |  | 25,773 | 22,596 | 20,080
Assets | 584,722 |  |  |  | 575,772 |  |  |  | 584,722 | 575,772 |
Inter-segment Elimination [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (460) | (560) | (527)
Other Income (Expense), Net |  |  |  |  |  |  |  |  | (346) | (485) | (723)
Interest Expense |  |  |  |  |  |  |  |  | (89) | (91) | (97)
Assets | (6,374) |  |  |  | (6,334) |  |  |  | (6,374) | (6,334) |
Regulated [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 111,247 | 103,556 | 100,910
Operating Income |  |  |  |  |  |  |  |  | 33,603 | 32,000 | 28,744
Depreciation |  |  |  |  |  |  |  |  | 11,874 | 11,262 | 10,807
Other Income (Expense), Net |  |  |  |  |  |  |  |  | 619 | 157 | 828
Interest Expense |  |  |  |  |  |  |  |  | 5,554 | 5,607 | 5,807
Income Taxes |  |  |  |  |  |  |  |  | 9,522 | 8,907 | 7,635
Net Income |  |  |  |  |  |  |  |  | 18,889 | 17,249 | 15,504
Capital Expenditures |  |  |  |  |  |  |  |  | 25,706 | 22,498 | 19,894
Assets | 584,660 |  |  |  | 574,854 |  |  |  | 584,660 | 574,854 |
Non - Regulated [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 15,238 | 14,143 | 14,463
Operating Income |  |  |  |  |  |  |  |  | 2,237 | 2,392 | 2,226
Depreciation |  |  |  |  |  |  |  |  | 177 | 182 | 181
Other Income (Expense), Net |  |  |  |  |  |  |  |  | 20 | (75) | (14)
Interest Expense |  |  |  |  |  |  |  |  | 89 | 91 | 97
Income Taxes |  |  |  |  |  |  |  |  | 1,029 | 1,030 | 986
Net Income |  |  |  |  |  |  |  |  | 1,139 | 1,196 | 1,129
Capital Expenditures |  |  |  |  |  |  |  |  | 67 | 98 | $ 186
Assets | $ 6,436 |  |  |  | $ 7,252 |  |  |  | $ 6,436 | $ 7,252 |

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