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Revenue from Customers (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Schedule of Backlog By Segment | The following table presents the Company’s backlog, by segment:
|  |  | December 31,
|  |  |  |  | 2020 |  | 2019
Heavy Civil Backlog |  |  |  |  | $ | 898,183 |  |  | $ | 834,049 |
Specialty Services Backlog |  |  |  |  | 277,205 |  |  | 233,976 |
Total Heavy Civil and Specialty Services Backlog |  |  |  |  | $ | 1,175,388 |  |  | $ | 1,068,025 |
Disaggregation of Revenue | The following tables present the Company’s revenues disaggregated by major end market and contract type:
|  |  | Years Ended December 31,
Revenues by major end market |  |  |  |  | 2020 |  | 2019 |  | 2018
Heavy Highway |  |  |  |  | $ | 526,561 |  |  | $ | 483,175 |  |  | $ | 513,376 |
Aviation |  |  |  |  | 109,894 |  |  | 141,371 |  |  | 111,824 |
Water Containment and Treatment |  |  |  |  | 69,922 |  |  | 65,795 |  |  | 66,928 |
Other |  |  |  |  | 47,447 |  |  | 69,984 |  |  | 73,510 |
Heavy Civil Revenues |  |  |  |  | 753,824 |  |  | 760,325 |  |  | 765,638 |
Land Development |  |  |  |  | 397,253 |  |  | 84,637 |  |  | — |
Commercial |  |  |  |  | 111,641 |  |  | 128,187 |  |  | 120,333 |
Specialty Services Revenues |  |  |  |  | 508,894 |  |  | 212,824 |  |  | 120,333 |
Residential Revenues |  |  |  |  | 164,694 |  |  | 153,129 |  |  | 151,696 |
Total Revenues |  |  |  |  | $ | 1,427,412 |  |  | $ | 1,126,278 |  |  | $ | 1,037,667 |
Revenues by contract type |  |  |  |  |  |  |  |  |
Fixed-Unit Price |  |  |  |  | $ | 843,401 |  |  | $ | 708,638 |  |  | $ | 733,047 |
Lump Sum |  |  |  |  | 389,045 |  |  | 262,237 |  |  | 146,874 |
Residential and Other |  |  |  |  | 194,966 |  |  | 155,403 |  |  | 157,746 |
Total Revenues |  |  |  |  | $ | 1,427,412 |  |  | $ | 1,126,278 |  |  | $ | 1,037,667 |

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