Goodwill and Other Intangible Assets

6 Months Ended

Jun. 30, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill

The table below summarizes the changes in the carrying amount of goodwill by reportable segment:



	Corporate Finance & Restructuring			Forensic and Litigation Consulting			Economic Consulting			Technology			Strategic Communications			Total
Balance at December 31, 2017
Goodwill	$	454,816		$	233,719		$	268,995		$	117,740		$	323,672		$	1,398,942
Accumulated goodwill impairment	—			—			—			—			(194,139		)	(194,139		)
Goodwill, net at December 31, 2017	454,816			233,719			268,995			117,740			129,533			1,204,803
Foreign currency translation adjustment and other	(2,454		)	(1,168		)	(213		)	(38		)	(2,198		)	(6,071		)
Balance at June 30, 2018
Goodwill	452,362			232,551			268,782			117,702			321,474			1,392,871
Accumulated goodwill impairment	—			—			—			—			(194,139		)	(194,139		)
Goodwill, net at June 30, 2018	$	452,362		$	232,551		$	268,782		$	117,702		$	127,335		$	1,198,732

Other Intangible Assets

Other intangible assets with finite lives, comprised primarily of customer relationships, are amortized over their estimated useful lives. We recorded amortization expense of $2.1 million and $4.3 million for the three and six months ended June 30, 2018, respectively, and $2.4 million and $4.9 million for the three and six months ended June 30, 2017, respectively.

We estimate our future amortization expense for our intangible assets with finite lives to be as follows:



Year	As of June 30, 2018⁽¹⁾
2018 (remaining)	$	3,884
2019	7,437
2020	7,274
2021	6,731
2022	4,939
Thereafter	3,514
	$	33,779


⁽¹⁾	Actual amortization expense to be reported in future periods could differ from these estimates because of new intangible asset acquisitions, changes in useful lives or other relevant factors or changes.

- 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.

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