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Basis of Presentation and General Information (Summary of Disaggregation of Total Revenue) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Oct. 01, 2021
Sep. 30, 2022
Oct. 01, 2021
Disaggregation Of Revenue [Line Items]        
Segment revenue $ 72,033 $ 71,894 $ 223,625 $ 208,577
Global S&BT [Member]        
Disaggregation Of Revenue [Line Items]        
Segment revenue 41,593 37,085 128,760 106,956
Global S&BT [Member] | Consulting [Member] | North America [Member]        
Disaggregation Of Revenue [Line Items]        
Segment revenue 35,804 31,482 109,587 90,032
Global S&BT [Member] | Consulting [Member] | International [Member]        
Disaggregation Of Revenue [Line Items]        
Segment revenue 5,789 5,603 19,173 16,924
Oracle Solutions [Member]        
Disaggregation Of Revenue [Line Items]        
Segment revenue 17,682 20,762 59,165 55,763
Oracle Solutions [Member] | Consulting and Software Support and Maintenance [Member]        
Disaggregation Of Revenue [Line Items]        
Segment revenue 17,682 20,762 59,165 55,763
SAP Solutions [Member]        
Disaggregation Of Revenue [Line Items]        
Segment revenue 12,758 14,047 35,700 45,858
SAP Solutions [Member] | Consulting and Software Support and Maintenance [Member]        
Disaggregation Of Revenue [Line Items]        
Segment revenue 10,118 12,291 30,880 37,015
SAP Solutions [Member] | Software License Sales [Member]        
Disaggregation Of Revenue [Line Items]        
Segment revenue $ 2,640 $ 1,756 $ 4,820 $ 8,843