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Segment Information (Tables) | 3 Months Ended
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Mar. 31, 2018
Segment Reporting [Abstract] |
Schedule of Segment Reporting Information by Segment | The following table presents financial information about our reportable segments:
|  | Three Months Ended
|  | March 31,
|  | 2018 |  | 2017
(in thousands) |  |  |  |
Operating Revenues, Unaffiliated Customers |  |  |  |
Regulated Energy segment |  | $ | 105,954 |  |  | $ | 96,446 |
Unregulated Energy segment and other businesses |  | 133,402 |  |  | 88,714 |
Total operating revenues, unaffiliated customers |  | $ | 239,356 |  |  | $ | 185,160 |
Intersegment Revenues (1) |  |  |  |
Regulated Energy segment |  | $ | 3,439 |  |  | $ | 1,208 |
Unregulated Energy segment |  | 11,965 |  |  | 4,011 |
Other businesses |  | 194 |  |  | 228 |
Total intersegment revenues |  | $ | 15,598 |  |  | $ | 5,447 |
Operating Income |  |  |  |
Regulated Energy segment |  | $ | 26,711 |  |  | $ | 23,395 |
Unregulated Energy segment |  | 13,684 |  |  | 11,575 |
Other businesses and eliminations |  | 11 |  |  | 129 |
Total operating income |  | 40,406 |  |  | 35,099 |
Other income (expense), net |  | 68 |  |  | (700 | )
Interest charges |  | 3,664 |  |  | 2,739 |
Income before Income Taxes |  | 36,810 |  |  | 31,660 |
Income taxes |  | 9,955 |  |  | 12,516 |
Net Income |  | $ | 26,855 |  |  | $ | 19,144 |
(1) | All significant intersegment revenues are billed at market rates and have been eliminated from consolidated operating revenues.
(in thousands) |  | March 31, 2018 |  | December 31, 2017
Identifiable Assets |  |  |  |
Regulated Energy segment |  | $ | 1,148,635 |  |  | $ | 1,121,673 |
Unregulated Energy segment |  | 246,230 |  |  | 261,541 |
Other businesses and eliminations |  | 32,585 |  |  | 34,220 |
Total identifiable assets |  | $ | 1,427,450 |  |  | $ | 1,417,434 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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