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v3.20.4

Segment Information - Revenue, Operating Income, and Assets, By Reportable Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 1,427,412 | $ 1,126,278 | $ 1,037,667
Depreciation and amortization | 32,785 | 20,740 | 16,770
Operating Income | 94,892 | 37,751 | 42,611
Acquisition related costs | (1,026) | (4,311) | 0
Assets | 952,694 | 934,689 |
Heavy Civil |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 288,529 | 270,646 |
Specialty Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 580,335 | 577,377 |
Residential |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 83,830 | 86,666 |
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,427,412 | 1,126,278 | 1,037,667
Depreciation and amortization | 32,785 | 20,740 | 16,770
Operating Income | 95,918 | 42,062 | 42,611
Operating Segments | Heavy Civil |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 753,824 | 760,325 | 765,638
Depreciation and amortization | 11,191 | 12,839 | 13,492
Operating Income | 4,536 | 3,316 | 17,044
Operating Segments | Specialty Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 508,894 | 212,824 | 120,333
Depreciation and amortization | 19,745 | 6,059 | 1,439
Operating Income | 70,583 | 18,207 | 4,629
Operating Segments | Residential |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 164,694 | 153,129 | 151,696
Depreciation and amortization | 1,849 | 1,842 | 1,839
Operating Income | $ 20,799 | $ 20,539 | $ 20,938

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