Basis of Presentation and General Information (Summary of Disaggregation of Total Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2025	Mar. 29, 2024
Disaggregation Of Revenue [Line Items]
Segment revenue	$ 77,865	$ 77,187
Global S&BT [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	43,357	40,892
Global S&BT [Member] | Consulting [Member] | North America [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	33,147	33,690
Global S&BT [Member] | Consulting [Member] | International [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	10,210	7,202
Oracle Solutions [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	21,085	21,729
Oracle Solutions [Member] | Consulting and Software Support and Maintenance [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	21,085	21,729
SAP Solutions [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	13,423	14,566
SAP Solutions [Member] | Consulting and Software Support and Maintenance [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	9,933	9,836
SAP Solutions [Member] | Software-related sales [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	$ 3,490	$ 4,730