Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill And Intangible Assets Disclosure [Abstract]

Schedule of Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill for the fiscal years ended December 31 were as follows:

	2021			2020
Balance as of January 1	$	909,913		$	719,934
Goodwill resulting from business combination - ITG		—			188,253
Goodwill resulting from business combination - ESAC		11,226			—
Goodwill resulting from business combination - Creative Systems and Consulting		126,118			—
Effect of foreign currency translation		(497	)		1,726
Balance as of December 31	$	1,046,760		$	909,913

Schedule of Other Intangibles

Other intangibles consisted of the following at December 31:    

	2021
	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Customer-related	$	167,577	$	(92,494	)	$	75,083
Developed technology		5,411		(944	)		4,467
Total amortizable intangible assets		172,988		(93,438	)		79,550
Intangible with indefinite life		95		—			95
Total other intangible assets	$	173,083	$	(93,438	)	$	79,645

	2020
	Gross Carrying Value		Accumulated Amortization			Net Carrying Value
Customer-related	$	142,849	$	(83,137	)	$	59,712
Developed technology		733		(653	)		80
Total amortizable intangible assets		143,582		(83,790	)		59,792
Intangible with indefinite life		95		—			95
Total other intangible assets	$	143,677	$	(83,790	)	$	59,887

Schedule of Estimated Future Amortization Expense Relating to Intangible Assets

The estimated future amortization expense relating to intangible assets is as follows: 

Year ending December 31,
2022	$	19,920
2023		18,864
2024		18,211
2025		13,393
2026		7,207
Thereafter		1,955
Total	$	79,550