Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amounts of Goodwill by Operating Segment

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

	Corporate Finance &   Restructuring (1)		Forensic and Litigation Consulting (1)		Economic Consulting (1)		Technology (1)		Strategic Communications (2)		Total
Balance as of December 31, 2020	$	506,072	$	233,374	$	269,087	$	96,821	$	129,525	$	1,234,879
Foreign currency translation   adjustment and other	(1,853)		(192)		(38)		19		477		(1,587)
Balance as of March 31, 2021	$	504,219	$	233,182	$	269,049	$	96,840	$	130,002	$	1,233,292

(1)    There were no accumulated impairment losses for the Corporate Finance & Restructuring ("Corporate Finance"), Forensic and Litigation Consulting ("FLC"), Economic Consulting or Technology segments as of March 31, 2021 and December 31, 2020, respectively.

(2)    Amounts for our Strategic Communications segment include gross carrying values of $324.1 million and $323.7 million as of March 31, 2021 and December 31, 2020, respectively, and accumulated impairment losses of $194.1 million as of March 31, 2021 and December 31, 2020.

The purchase price allocation for the 2020 acquisition assigned to the Corporate Finance segment is preliminary.

Schedule of Other Intangible Assets Amortized Intangibles

Intangible assets were as follows:

	March 31, 2021						December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets
Customer relationships	$	111,426	$	87,356	$	24,070	$	111,556	$	85,180	$	26,376
Trademarks	11,329		3,212		8,117		11,809		2,768		9,041
Acquired software and other	3,458		2,573		885		3,618		2,585		1,033
	126,213		93,141		33,072		126,983		90,533		36,450
Non-amortizing intangible assets
Trademarks	5,100		—		5,100		5,100		—		5,100
Total	$	131,313	$	93,141	$	38,172	$	132,083	$	90,533	$	41,550

Schedule of Other Intangible Assets Unamortized Intangibles

Intangible assets were as follows:

	March 31, 2021						December 31, 2020
	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount
Amortizing intangible assets
Customer relationships	$	111,426	$	87,356	$	24,070	$	111,556	$	85,180	$	26,376
Trademarks	11,329		3,212		8,117		11,809		2,768		9,041
Acquired software and other	3,458		2,573		885		3,618		2,585		1,033
	126,213		93,141		33,072		126,983		90,533		36,450
Non-amortizing intangible assets
Trademarks	5,100		—		5,100		5,100		—		5,100
Total	$	131,313	$	93,141	$	38,172	$	132,083	$	90,533	$	41,550

Schedule of Future Amortization Expense Intangible Assets

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

Year	As of March 31, 2021 (1)
2021 (remaining)	$	7,801
2022	8,536
2023	4,850
2024	3,414
2025	2,729
Thereafter	5,742
	$	33,072

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