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v3.3.0.814

Segment financial information (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 USD ($) | Sep. 30, 2014 USD ($) | Jun. 30, 2014 USD ($) | Mar. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Sep. 30, 2013 USD ($) | Jun. 30, 2013 USD ($) | Mar. 31, 2013 USD ($) | Dec. 31, 2014 USD ($) entity | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($)
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 790,040 | $ 867,096 | $ 798,657 | $ 783,749 | $ 832,503 | $ 829,168 | $ 794,567 | $ 782,232 | $ 3,239,542 | $ 3,238,470 |  | $ 3,374,995 |
Depreciation and amortization |  |  |  |  |  |  |  |  | 179,557 | 164,728 |  | 158,347 |
Interest expense |  |  |  |  |  |  |  |  | 87,160 | 85,556 |  | 89,443 |
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 261,922 | 247,747 |  | 217,407 |
Income taxes (benefit) |  |  |  |  |  |  |  |  | 91,712 | 84,341 |  | 76,859 |
Net income | 33,630 | 48,286 | 41,894 | 46,400 | 39,486 | 48,707 | 41,061 | 34,152 | 170,210 | 163,406 | [1] | 140,548 | [1]
Preferred stock dividends of subsidiaries |  |  |  |  |  |  |  |  | 1,890 | 1,890 |  | 1,890 |
Net income for common stock | 33,157 | $ 47,815 | $ 41,421 | $ 45,927 | 39,013 | $ 48,236 | $ 40,588 | $ 33,679 | 168,320 | 161,516 |  | 138,658 |
Capital expenditures |  |  |  |  |  |  |  |  | 364,826 | 389,438 | [1] | 370,715 | [1]
Assets | 11,184,161 |  |  |  | 10,340,044 |  |  |  | $ 11,184,161 | 10,340,044 |  | 10,149,132 |
Electric utility |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Number of entities involved | entity |  |  |  |  |  |  |  |  | 3 |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 2,987,323 | 2,980,172 |  | 3,109,439 |
Depreciation and amortization |  |  |  |  |  |  |  |  | 172,797 | 159,102 |  | 151,496 |
Interest expense |  |  |  |  |  |  |  |  | 64,757 | 59,279 |  | 62,055 |
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 220,361 | 194,041 |  | 162,319 |
Income taxes (benefit) |  |  |  |  |  |  |  |  | 80,725 | 69,117 |  | 61,048 |
Net income |  |  |  |  |  |  |  |  | 139,636 | 124,924 |  | 101,271 |
Preferred stock dividends of subsidiaries |  |  |  |  |  |  |  |  | 1,995 | 1,995 |  | 1,995 |
Net income for common stock |  |  |  |  |  |  |  |  | 137,641 | 122,929 |  | 99,276 |
Capital expenditures |  |  |  |  |  |  |  |  | 336,679 | 378,044 |  | 355,326 |
Assets | 5,590,457 |  |  |  | 5,087,129 |  |  |  | 5,590,457 | 5,087,129 |  | 5,108,793 |
Bank |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 252,497 | 258,147 |  | 265,539 |
Depreciation and amortization |  |  |  |  |  |  |  |  | 5,399 | 4,230 |  | 5,334 |
Interest expense |  |  |  |  |  |  |  |  | 10,808 | 10,077 |  | 11,292 |
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 75,619 | 87,059 |  | 89,021 |
Income taxes (benefit) |  |  |  |  |  |  |  |  | 24,127 | 29,525 |  | 30,384 |
Net income |  |  |  |  |  |  |  |  | 51,492 | 57,534 |  | 58,637 |
Preferred stock dividends of subsidiaries |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 |
Net income for common stock |  |  |  |  |  |  |  |  | 51,492 | 57,534 |  | 58,637 |
Capital expenditures |  |  |  |  |  |  |  |  | 28,073 | 11,193 |  | 14,979 |
Assets | 5,565,241 |  |  |  | 5,243,824 |  |  |  | 5,565,241 | 5,243,824 |  | 5,041,673 |
Other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (278) | 151 |  | 17 |
Depreciation and amortization |  |  |  |  |  |  |  |  | 1,361 | 1,396 |  | 1,517 |
Interest expense |  |  |  |  |  |  |  |  | 11,595 | 16,200 |  | 16,096 |
Income (loss) before income taxes |  |  |  |  |  |  |  |  | (34,058) | (33,353) |  | (33,933) |
Income taxes (benefit) |  |  |  |  |  |  |  |  | (13,140) | (14,301) |  | (14,573) |
Net income |  |  |  |  |  |  |  |  | (20,918) | (19,052) |  | (19,360) |
Preferred stock dividends of subsidiaries |  |  |  |  |  |  |  |  | (105) | (105) |  | (105) |
Net income for common stock |  |  |  |  |  |  |  |  | (20,813) | (18,947) |  | (19,255) |
Capital expenditures |  |  |  |  |  |  |  |  | 74 | 201 |  | 410 |
Assets | $ 28,463 |  |  |  | $ 9,091 |  |  |  | 28,463 | 9,091 |  | (1,334) |
Operating Segments |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 3,239,542 | 3,238,470 |  | 3,374,995 |
Operating Segments | Electric utility |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 2,987,299 | 2,980,139 |  | 3,109,353 |
Operating Segments | Bank |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 252,497 | 258,147 |  | 265,539 |
Operating Segments | Other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (254) | 184 |  | 103 |
Intersegment eliminations |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 |
Intersegment eliminations | Electric utility |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 24 | 33 |  | 86 |
Intersegment eliminations | Bank |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 0 | 0 |  | 0 |
Intersegment eliminations | Other |  |  |  |  |  |  |  |  |  |  |  |  |
Segment financial information |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ (24) | $ (33) |  | $ (86) |
[1] | As restated - See Note 1, “Summary of significant accounting policies - Revision and restatements of previously issued financial statements.”

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