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Basis of Presentation and General Information (Summary of Disaggregation of Total Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jul. 01, 2022	Jun. 30, 2023	Jul. 01, 2022
Disaggregation Of Revenue [Line Items]
Segment revenue	$ 77,102	$ 75,928	$ 148,331	$ 151,592
Global S&BT [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	43,632	44,530	85,967	87,167
Global S&BT [Member] | Consulting [Member] | North America [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	36,444	38,698	72,611	73,783
Global S&BT [Member] | Consulting [Member] | International [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	7,188	5,832	13,356	13,384
Oracle Solutions [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	20,775	19,971	37,943	41,483
Oracle Solutions [Member] | Consulting and Software Support and Maintenance [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	20,775	19,971	37,943	41,483
SAP Solutions [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	12,695	11,427	24,421	22,942
SAP Solutions [Member] | Consulting and Software Support and Maintenance [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	11,054	10,413	21,767	20,762
SAP Solutions [Member] | Software License Sales [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue	$ 1,641	$ 1,014	$ 2,654	$ 2,180

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