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Revenue Recognition (Tables) | 6 Months Ended
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Jun. 30, 2020
Revenue Recognition |
Schedule of revenue by contract and market type | The components of the Company’s revenue by contract type for the three and six months ended June 30, 2020 and 2019 were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended June 30, 2020 |
​ | ​ | T&D | ​ | C&I | ​ | Total |
(dollars in thousands) |  | Amount |  | Percent |  | Amount |  | Percent |  | Amount |  | Percent |
Fixed price | ​ | $ | 126,350 | ​ | 45.7 | % | $ | 187,662 | ​ | 79.4 | % | $ | 314,012 | ​ | 61.2 | %
Unit price | ​ |  | 84,629 |  | 30.6 | ​ |  | 19,047 |  | 8.1 | ​ |  | 103,676 |  | 20.2 | ​
T&E | ​ |  | 61,632 |  | 22.3 | ​ |  | 21,752 |  | 9.2 | ​ |  | 83,384 |  | 16.3 | ​
Other | ​ |  | 4,148 |  | 1.4 | ​ |  | 7,831 |  | 3.3 | ​ |  | 11,979 |  | 2.3 | ​
​ | ​ | $ | 276,759 |  | 100.0 | % | $ | 236,292 |  | 100.0 | % | $ | 513,051 |  | 100.0 | %
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three months ended June 30, 2019 | ​
​ | ​ | T&D | ​ | C&I | ​ | Total |
(dollars in thousands) | ​ | Amount | ​ | Percent | ​ | Amount | ​ | Percent | ​ | Amount | ​ | Percent |
Fixed price | ​ | $ | 119,572 |  | 46.7 | % | $ | 115,117 |  | 59.7 | % | $ | 234,689 |  | 52.3 | %
Unit price | ​ |  | 52,162 |  | 20.4 | ​ |  | 12,855 |  | 6.7 | ​ |  | 65,017 |  | 14.5 | ​
T&E | ​ |  | 76,841 |  | 30.0 | ​ |  | 37,193 |  | 19.3 | ​ |  | 114,034 |  | 25.4 | ​
Other | ​ |  | 7,335 |  | 2.9 | ​ |  | 27,701 |  | 14.3 | ​ |  | 35,036 |  | 7.8 | ​
​ | ​ | $ | 255,910 |  | 100.0 | % | $ | 192,866 |  | 100.0 | % | $ | 448,776 |  | 100.0 | %
​ The components of the Company’s revenue by contract type for the six months ended June 30, 2020 and 2019 were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six months ended June 30, 2020 |
​ | ​ | T&D | ​ | C&I | ​ | Total |
(dollars in thousands) |  | ​ | Amount |  | Percent |  | ​ | Amount |  | Percent |  | ​ | Amount |  | Percent | ​
Fixed price | ​ | $ | 247,352 |  | 46.1 | % | $ | 406,201 |  | 82.0 | % | $ | 653,553 |  | 63.4 | %
Unit price | ​ |  | 147,939 |  | 27.6 | ​ |  | 37,123 |  | 7.5 | ​ |  | 185,062 |  | 17.9 | ​
T&E | ​ |  | 129,683 |  | 24.2 | ​ |  | 37,554 |  | 7.6 | ​ |  | 167,237 |  | 16.2 | ​
Other | ​ |  | 11,055 |  | 2.1 | ​ |  | 14,614 |  | 2.9 | ​ |  | 25,669 |  | 2.5 | ​
​ | ​ | $ | 536,029 |  | 100.0 | % | $ | 495,492 |  | 100.0 | % | $ | 1,031,521 |  | 100.0 | %
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six months ended June 30, 2019 |
​ | ​ | T&D | ​ | C&I | ​ | Total |
(dollars in thousands) |  | ​ | Amount |  | Percent |  | ​ | Amount |  | Percent |  | ​ | Amount |  | Percent | ​
Fixed price | ​ | $ | 252,896 |  | 47.9 | % | $ | 248,828 |  | 64.1 | % | $ | 501,724 |  | 54.7 | %
Unit price | ​ |  | 103,356 |  | 19.6 | ​ |  | 22,843 |  | 5.9 | ​ |  | 126,199 |  | 13.8 | ​
T&E | ​ |  | 153,149 |  | 29.0 | ​ |  | 49,724 |  | 12.8 | ​ |  | 202,873 |  | 22.1 | ​
Other | ​ |  | 19,057 |  | 3.5 | ​ |  | 67,017 |  | 17.2 | ​ |  | 86,074 |  | 9.4 | ​
​ | ​ | $ | 528,458 |  | 100.0 | % | $ | 388,412 |  | 100.0 | % | $ | 916,870 |  | 100.0 | %
​ The components of the Company’s revenue by market type for the three months ended June 30, 2020 and 2019 were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended June 30, 2020 | ​ | Three months ended June 30, 2019
(dollars in thousands) |  | Amount |  | Percent |  | Segment |  | Amount |  | Percent |  | Segment
Transmission | ​ | $ | 181,189 | ​ | 35.3 | % | T&D | ​ | $ | 169,466 | ​ | 37.8 | % | T&D
Distribution | ​ |  | 95,570 |  | 18.6 |  | T&D | ​ |  | 86,444 |  | 19.2 |  | T&D
Electrical construction | ​ |  | 236,292 |  | 46.1 |  | C&I | ​ |  | 192,866 |  | 43.0 |  | C&I
Total revenue | ​ | $ | 513,051 |  | 100.0 | % |  | ​ | $ | 448,776 |  | 100.0 | % |
​ The components of the Company’s revenue by market type for the six months ended June 30, 2020 and 2019 were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six months ended June 30, 2020 | ​ | Six months ended June 30, 2019
(dollars in thousands) |  | Amount |  | Percent |  | Segment |  | Amount |  | Percent |  | Segment
Transmission | ​ | $ | 352,755 |  | 34.2 | % | T&D | ​ | $ | 357,231 |  | 39.0 | % | T&D
Distribution | ​ |  | 183,274 |  | 17.8 |  | T&D | ​ |  | 171,227 |  | 18.6 |  | T&D
Electrical construction | ​ |  | 495,492 |  | 48.0 |  | C&I | ​ |  | 388,412 |  | 42.4 |  | C&I
Total revenue | ​ | $ | 1,031,521 |  | 100.0 | % |  | ​ | $ | 916,870 |  | 100.0 | % |
​
Schedule of amount of the remaining performance obligations that the company reasonably estimates will not be recognized within the next twelve months | The following table summarizes the amount of remaining performance obligations as of June 30, 2020 that the Company expects to be realized and the amount of the remaining performance obligations that the Company reasonably estimates will not be recognized within the next twelve months. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Remaining Performance Obligations at June 30, 2020 | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Amount estimated to not be | ​ | Total at
(in thousands) |  | Total |  | recognized within 12 months |  | December 31, 2019
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
T&D | ​ | $ | 421,472 | ​ | $ | 40,418 | ​ | $ | 381,850
C&I | ​ |  | 1,025,097 | ​ |  | 191,528 | ​ |  | 1,027,193
Total | ​ | $ | 1,446,569 | ​ | $ | 231,946 | ​ | $ | 1,409,043

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