Summary of Significant Accounting Policies - Revenue by Vertical Market as Percentage of Total Revenue (Details) - Customer Concentration Risk [Member] - Sales Revenue, Services, Net [Member]	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Concentration Risk [Line Items]
Total revenue	100.00%	100.00%	100.00%
Technology Service Providers [Member]
Concentration Risk [Line Items]
Total revenue	22.50%	26.70%	31.30%
Financial Services [Member]
Concentration Risk [Line Items]
Total revenue	15.90%	16.20%	15.80%
Manufacturing [Member]
Concentration Risk [Line Items]
Total revenue	15.50%	11.70%	13.50%
Energy [Member]
Concentration Risk [Line Items]
Total revenue	5.80%	5.10%	6.20%
General Markets [Member]
Concentration Risk [Line Items]
Total revenue	22.20%	18.70%	18.30%
Healthcare [Member]
Concentration Risk [Line Items]
Total revenue	18.10%	21.60%	14.90%