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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | 10. Goodwill and Other Intangible Assets Goodwill The table below summarizes the changes in the carrying amount of goodwill by reportable segment.
|  | Corporate |  |  | Forensic and |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | Finance & |  |  | Litigation |  |  | Economic |  |  |  |  |  |  | Strategic |  |  |  |  |
|  | Restructuring |  |  | Consulting |  |  | Consulting |  |  | Technology |  |  | Communications |  |  | Total |
Balance at December 31, 2014 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 446,066 |  |  | $ | 238,173 |  |  | $ | 269,897 |  |  | $ | 117,967 |  |  | $ | 333,725 |  |  | $ | 1,405,828 |
Accumulated goodwill impairment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (194,139 | ) |  |  | (194,139 | )
Goodwill, net at December 31, 2014 |  |  | 446,066 |  |  |  | 238,173 |  |  |  | 269,897 |  |  |  | 117,967 |  |  |  | 139,586 |  |  |  | 1,211,689 |
Acquisitions(1) |  |  | 70 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 70 |
Foreign currency translation adjustment and other |  |  | (4,588 | ) |  |  | (2,962 | ) |  |  | (556 | ) |  |  | (79 | ) |  |  | (5,276 | ) |  |  | (13,461 | )
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 |
Acquisitions(1) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 218 |  |  |  | 218 |
Foreign currency translation adjustment and other |  |  | (882 | ) |  |  | (4,667 | ) |  |  | (1,132 | ) |  |  | (281 | ) |  |  | (11,553 | ) |  |  | (18,515 | )
Balance at December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 440,666 |  |  |  | 230,544 |  |  |  | 268,209 |  |  |  | 117,607 |  |  |  | 317,114 |  |  |  | 1,374,140 |
Accumulated goodwill impairment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (194,139 | ) |  |  | (194,139 | )
Goodwill, net at December 31, 2016 |  | $ | 440,666 |  |  | $ | 230,544 |  |  | $ | 268,209 |  |  | $ | 117,607 |  |  | $ | 122,975 |  |  | $ | 1,180,001 |
(1) | Includes adjustments during the purchase price allocation period.
Other Intangible Assets Other intangible assets with finite lives are amortized over their estimated useful lives. We recorded amortization expense of $10.3 million, $11.7 million and $15.5 million during the years ended December 31, 2016, 2015 and 2014, respectively. Based solely on the amortizable intangible assets recorded as of December 31, 2016, we estimate amortization expense to be $9.4 million in 2017, $7.9 million in 2018, $7.3 million in 2019, $7.1 million in 2020, $6.5 million in 2021 and an aggregate of $8.3 million in years after 2021. Actual amortization expense to be reported in future periods could differ from these estimates as a result of new intangible asset acquisitions, changes in useful lives or other relevant factors or changes.
|  |  |  |  |  | December 31, 2016 |  |  | December 31, 2015 |
|  | Weighted Average |  |  | Gross |  |  |  |  |  |  | Net |  |  | Gross |  |  |  |  |  |  | Net |
|  | Useful Life |  |  | Carrying |  |  | Accumulated |  |  | Carrying |  |  | Carrying |  |  | Accumulated |  |  | Carrying |
|  | in Years |  |  | Amount |  |  | Amortization |  |  | Amount |  |  | Amount |  |  | Amortization |  |  | Amount |
Amortized intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  |  | 13.6 |  |  | $ | 119,736 |  |  | $ | 75,212 |  |  | $ | 44,524 |  |  | $ | 128,512 |  |  | $ | 72,941 |  |  | $ | 55,571 |
Non-competition agreements |  |  | 6.5 |  |  |  | 1,263 |  |  |  | 1,246 |  |  |  | 17 |  |  |  | 7,263 |  |  |  | 7,052 |  |  |  | 211 |
Acquired software |  |  | 9.3 |  |  |  | 3,171 |  |  |  | 1,292 |  |  |  | 1,879 |  |  |  | 3,273 |  |  |  | 940 |  |  |  | 2,333 |
Trade names |  |  | 3.0 |  |  |  | 360 |  |  |  | 260 |  |  |  | 100 |  |  |  | 360 |  |  |  | 140 |  |  |  | 220 |
|  |  |  |  |  |  | 124,530 |  |  |  | 78,010 |  |  |  | 46,520 |  |  |  | 139,408 |  |  |  | 81,073 |  |  |  | 58,335 |
Unamortized intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade names |  | Indefinite |  |  |  | 5,600 |  |  |  | — |  |  |  | 5,600 |  |  |  | 5,600 |  |  |  | — |  |  |  | 5,600 |
Total |  | 13.4 |  |  | $ | 130,130 |  |  | $ | 78,010 |  |  | $ | 52,120 |  |  | $ | 145,008 |  |  | $ | 81,073 |  |  | $ | 63,935 |

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- Definition The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16373-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 4: 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 5: 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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