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Goodwill (Tables) | 6 Months Ended
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Jun. 30, 2019
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 at December 31, 2018 and June 30, 2019 (in thousands):
|  | December 31, 2018 |  |  | Acquisitions |  |  | Foreign Exchange |  |  | June 30, 2019 |
Federal Solutions |  | $ | 666,841 |  |  | $ | 183,473 |  |  | $ | - |  |  | $ | 850,314 |
Critical Infrastructure |  |  | 70,097 |  |  |  | - |  |  |  | 1,992 |  |  |  | 72,089 |
Total |  | $ | 736,938 |  |  | $ | 183,473 |  |  | $ | 1,992 |  |  | $ | 922,403 |

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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=108376223&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=108376223&loc=d3e13854-109267 + Details
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