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Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Jun. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract] |
Schedule of Changes in Carrying Amounts of Goodwill by Operating Segment | Goodwill The changes in the carrying amounts of goodwill by operating segment for the six months ended June 30, 2016, are as follows:
|  | Corporate |  |  | Forensic and |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Finance & |  |  | Litigation |  |  | Economic |  |  |  |  |  |  | Strategic |  |  |  |  |
|  | Restructuring |  |  | Consulting |  |  | Consulting |  |  | Technology |  |  | Communications |  |  | Total |
Balance at December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 441,548 |  |  |  | 235,211 |  |  |  | 269,341 |  |  |  | 117,888 |  |  |  | 328,449 |  |  |  | 1,392,437 |
Accumulated goodwill impairment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (194,139 | ) |  |  | (194,139 | )
Goodwill, net at December 31, 2015 |  | $ | 441,548 |  |  | $ | 235,211 |  |  | $ | 269,341 |  |  | $ | 117,888 |  |  | $ | 134,310 |  |  | $ | 1,198,298 |
Foreign currency translation adjustment and other |  |  | 435 |  |  |  | (2,255 | ) |  |  | (565 | ) |  |  | (159 | ) |  |  | (6,152 | ) |  |  | (8,696 | )
Goodwill |  |  | 441,983 |  |  |  | 232,956 |  |  |  | 268,776 |  |  |  | 117,729 |  |  |  | 322,297 |  |  |  | 1,383,741 |
Accumulated goodwill impairment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (194,139 | ) |  |  | (194,139 | )
Goodwill, net at June 30, 2016 |  | $ | 441,983 |  |  | $ | 232,956 |  |  | $ | 268,776 |  |  | $ | 117,729 |  |  | $ | 128,158 |  |  | $ | 1,189,602 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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