Summary of Significant Accounting Policies - Revenue by Contract Type (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Sep. 30, 2022	Oct. 01, 2021
Schedule Of Revenue By Contract Type [Line Items]
Revenue percent	100.00%	100.00%	100.00%	100.00%
Time-and-material [Member]
Schedule Of Revenue By Contract Type [Line Items]
Revenue percent	76.30%	79.20%	77.20%	79.30%
Progress Billing [Member]
Schedule Of Revenue By Contract Type [Line Items]
Revenue percent	17.90%	18.20%	18.00%	18.30%
Percentage-of-completion [Member]
Schedule Of Revenue By Contract Type [Line Items]
Revenue percent	5.80%	2.60%	4.80%	2.40%