Basis of Presentation and Summary of Significant Accounting Policies - Intangible Assets (Details)	12 Months Ended
	Dec. 31, 2020 item USD ($)
Customer relationships | Minimum
Intangible Assets
Estimated useful life	4 years
Customer relationships | Maximum
Intangible Assets
Estimated useful life	16 years
Trademarks
Intangible Assets
Estimated useful life	1 year
Developed technology | Minimum
Intangible Assets
Estimated useful life	5 years
Developed technology | Maximum
Intangible Assets
Estimated useful life	8 years 6 months
Capitalized Software Costs | Minimum
Intangible Assets
Estimated useful life	3 years
Capitalized Software Costs | Maximum
Intangible Assets
Estimated useful life	5 years
Outsource contract costs
Intangible Assets
Number of principal categories | $	2
Non compete agreements
Intangible Assets
Number of executives terminated | item	4
Assembled workforce
Intangible Assets
Estimated useful life	4 years