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v3.20.1

Business segment data (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Segment Reporting Information [Line Items] |  |
Revenues | $ 1,197,373 | $ 1,091,191
Operating income (loss) | 57,070 | 64,218
Income (loss) from continuing operations | 25,539 | 41,089
Loss from discontinued operations, net of tax | (409) | (163)
Net income | 25,130 | 40,926
Electric |  |
Segment Reporting Information [Line Items] |  |
Revenues | 85,908 | 92,566
Operating income (loss) | 14,859 | 17,987
Natural gas distribution |  |
Segment Reporting Information [Line Items] |  |
Revenues | 326,443 | 342,147
Operating income (loss) | 49,998 | 50,317
Pipeline |  |
Segment Reporting Information [Line Items] |  |
Revenues | 10,655 | 8,613
Operating income (loss) | 11,419 | 9,904
Construction materials and contracting |  |
Segment Reporting Information [Line Items] |  |
Revenues | 262,144 | 227,113
Operating income (loss) | (43,269) | (41,580)
Construction services |  |
Segment Reporting Information [Line Items] |  |
Revenues | 512,205 | 420,733
Operating income (loss) | 23,796 | 27,465
Other |  |
Segment Reporting Information [Line Items] |  |
Revenues | 18 | 19
Operating income (loss) | 267 | 125
Intersegment eliminations |  |
Segment Reporting Information [Line Items] |  |
Revenues | (31,085) | (32,003)
Intersegment eliminations | Electric |  |
Segment Reporting Information [Line Items] |  |
Revenues | (195) | 0
Intersegment eliminations | Natural gas distribution |  |
Segment Reporting Information [Line Items] |  |
Revenues | (185) | 0
Intersegment eliminations | Pipeline |  |
Segment Reporting Information [Line Items] |  |
Revenues | (25,199) | (23,955)
Intersegment eliminations | Construction materials and contracting |  |
Segment Reporting Information [Line Items] |  |
Revenues | (63) | (95)
Intersegment eliminations | Construction services |  |
Segment Reporting Information [Line Items] |  |
Revenues | (2,470) | (129)
Intersegment eliminations | Other |  |
Segment Reporting Information [Line Items] |  |
Revenues | (2,973) | (7,824)
Total intersegment operating revenues |  |
Segment Reporting Information [Line Items] |  |
Revenues | 0 | 0
Regulated operation |  |
Segment Reporting Information [Line Items] |  |
Revenues | 418,682 | 439,617
Income (loss) from continuing operations | 51,129 | 59,009
Regulated operation | Electric |  |
Segment Reporting Information [Line Items] |  |
Revenues | 85,908 | 92,566
Income (loss) from continuing operations | 11,374 | 15,505
Regulated operation | Natural gas distribution |  |
Segment Reporting Information [Line Items] |  |
Revenues | 326,443 | 342,147
Income (loss) from continuing operations | 32,369 | 36,500
Regulated operation | Pipeline |  |
Segment Reporting Information [Line Items] |  |
Revenues | 6,331 | 4,904
Income (loss) from continuing operations | 7,386 | 7,004
Regulated operation | Intersegment eliminations |  |
Segment Reporting Information [Line Items] |  |
Revenues | 25,563 | 23,922
Regulated operation | Intersegment eliminations | Electric |  |
Segment Reporting Information [Line Items] |  |
Revenues | 195 | 0
Regulated operation | Intersegment eliminations | Natural gas distribution |  |
Segment Reporting Information [Line Items] |  |
Revenues | 185 | 0
Regulated operation | Intersegment eliminations | Pipeline |  |
Segment Reporting Information [Line Items] |  |
Revenues | 25,183 | 23,922
Nonregulated operation |  |
Segment Reporting Information [Line Items] |  |
Revenues | 778,691 | 651,574
Income (loss) from continuing operations | (25,590) | (17,920)
Nonregulated operation | Pipeline |  |
Segment Reporting Information [Line Items] |  |
Revenues | 4,324 | 3,709
Income (loss) from continuing operations | (13) | (163)
Nonregulated operation | Construction materials and contracting |  |
Segment Reporting Information [Line Items] |  |
Revenues | 262,144 | 227,113
Income (loss) from continuing operations | (38,215) | (34,449)
Nonregulated operation | Construction services |  |
Segment Reporting Information [Line Items] |  |
Revenues | 512,205 | 420,733
Income (loss) from continuing operations | 16,823 | 20,024
Nonregulated operation | Other |  |
Segment Reporting Information [Line Items] |  |
Revenues | 18 | 19
Income (loss) from continuing operations | (4,185) | (3,332)
Nonregulated operation | Intersegment eliminations |  |
Segment Reporting Information [Line Items] |  |
Revenues | 5,522 | 8,081
Nonregulated operation | Intersegment eliminations | Pipeline |  |
Segment Reporting Information [Line Items] |  |
Revenues | 16 | 33
Nonregulated operation | Intersegment eliminations | Construction materials and contracting |  |
Segment Reporting Information [Line Items] |  |
Revenues | 63 | 95
Nonregulated operation | Intersegment eliminations | Construction services |  |
Segment Reporting Information [Line Items] |  |
Revenues | 2,470 | 129
Nonregulated operation | Intersegment eliminations | Other |  |
Segment Reporting Information [Line Items] |  |
Revenues | $ 2,973 | $ 7,824

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