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v3.22.1

Segment Information - Revenue, Operating Income, and Assets, By Reportable Segment (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 1,581,766 | $ 1,427,412 | $ 1,126,278
Depreciation and amortization | 34,201 | 32,785 | 20,740
Operating Income | 107,287 | 94,892 | 37,751
Acquisition related costs | (3,877) | (1,026) | (4,311)
Assets | 1,230,996 | 952,694 |
Transportation Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 282,608 | 285,216 |
E-Infrastructure Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 772,533 | 470,617 |
Building Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Assets | 143,262 | 143,353 |
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 1,581,766 | 1,427,412 | 1,126,278
Depreciation and amortization | 34,120 | 32,632 | 20,468
Operating Income | 134,556 | 121,402 | 58,322
Operating Segments | Transportation Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 795,582 | 753,824 | 760,325
Depreciation and amortization | 10,171 | 10,981 | 12,529
Operating Income | 21,514 | 14,439 | 13,193
Operating Segments | E-Infrastructure Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 468,784 | 397,253 | 84,637
Depreciation and amortization | 20,889 | 18,664 | 4,770
Operating Income | 80,478 | 76,522 | 16,208
Operating Segments | Building Solutions |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 317,400 | 276,335 | 281,316
Depreciation and amortization | 3,060 | 2,987 | 3,169
Operating Income | 32,564 | 30,441 | 28,921
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Depreciation and amortization | 81 | 153 | 272
Operating Income | (23,392) | (25,484) | $ (16,260)
Assets | $ 32,593 | $ 53,508 |

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. 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