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Segment Information - Summary of Adjusted EBITDA Business Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Adjusted EBITDA attributable to Parsons Corporation |  |
Adjusted EBITDA attributable to Parsons Corporation | $ 58,974 | $ 68,275
Adjusted EBITDA attributable to noncontrolling interests | 1,522 | 3,749
Depreciation and amortization | (32,409) | (30,591)
Interest expense, net | (3,794) | (7,815)
Income tax expense | (5,084) | (1,886)
Equity-based compensation income (expense) | 7,721 | (3,850)
Transaction-related costs | (12,011) | (9,355)
Restructuring income (expense) | 33 | (2,218)
Other | (581) | (2,923)
Net income including noncontrolling interests | 14,371 | 13,386
Net income attributable to noncontrolling interests | 1,398 | 3,645
Net income attributable to Parsons Corporation | 12,973 | 9,741
Federal Solution Segment |  |
Adjusted EBITDA attributable to Parsons Corporation |  |
Adjusted EBITDA attributable to Parsons Corporation | 31,617 | 40,599
Critical Infrastructure |  |
Adjusted EBITDA attributable to Parsons Corporation |  |
Adjusted EBITDA attributable to Parsons Corporation | $ 27,357 | $ 27,676

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