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Basis of Presentation and General Information (Summary of Disaggregation of Total Revenue Including Reimbursable Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jun. 26, 2020	Jul. 02, 2021	Jun. 26, 2020	Jun. 26, 2017
Disaggregation Of Revenue [Line Items]
Revenue before reimbursements from continuing operations	$ 73,197	$ 52,751	$ 136,683	$ 122,284
Consulting [Member]
Disaggregation Of Revenue [Line Items]
Revenue before reimbursements from continuing operations	67,211	50,963	129,320		$ 114,275
Software License Sales [Member]
Disaggregation Of Revenue [Line Items]
Revenue before reimbursements from continuing operations	5,786	1,669	7,087		3,543
Revenue Before Reimbursements [Member]
Disaggregation Of Revenue [Line Items]
Revenue before reimbursements from continuing operations	$ 72,997	$ 52,632	$ 136,407	$ 117,818	$ 117,818

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+ References

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