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Goodwill (Tables) | 9 Months Ended
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Sep. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract] |
Summary of Changes in Carrying Value of Goodwill by Reporting Segment | The following table summarizes the changes in the carrying value of goodwill by reporting segment from December 31, 2020 to September 30, 2021 (in thousands):
|  | December 31, 2020 |  |  | Acquisitions |  |  | Foreign Exchange |  |  | September 30, 2021 |
Federal Solutions |  | $ | 1,188,882 |  |  | $ | 148,770 |  |  | $ | - |  |  | $ | 1,337,652 |
Critical Infrastructure |  |  | 73,096 |  |  |  | - |  |  |  | 717 |  |  |  | 73,813 |
Total |  | $ | 1,261,978 |  |  | $ | 148,770 |  |  | $ | 717 |  |  | $ | 1,411,465 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267 + Details
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