Summary of Significant Accounting Policies - Revenue by Vertical Market as Percentage of Total Revenue (Details) - Customer Concentration Risk [Member] - Sales Revenue, Services, Net [Member]	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Concentration Risk [Line Items]
Total revenue	100.00%	100.00%	100.00%	100.00%
Financial Services [Member]
Concentration Risk [Line Items]
Total revenue	16.70%	15.30%	17.10%	15.80%
Manufacturing [Member]
Concentration Risk [Line Items]
Total revenue	13.70%	15.20%	15.10%	14.50%
Technology Service Providers [Member]
Concentration Risk [Line Items]
Total revenue	14.80%	24.20%	15.50%	23.90%
Energy [Member]
Concentration Risk [Line Items]
Total revenue	6.50%	6.60%	6.40%	5.90%
General Markets [Member]
Concentration Risk [Line Items]
Total revenue	24.90%	21.10%	25.00%	22.40%
Healthcare [Member]
Concentration Risk [Line Items]
Total revenue	23.40%	17.60%	20.90%	17.50%