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Basis of Presentation and General Information (Summary of Disaggregation of Total Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 29, 2023	Sep. 29, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 30, 2022	Sep. 30, 2022	Jul. 01, 2022	Apr. 01, 2022	Dec. 29, 2023	Dec. 30, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Segment revenue	$ 72,403	$ 75,856	$ 77,102	$ 71,229	$ 70,117	$ 72,033	$ 75,928	$ 75,664	$ 296,590	$ 293,742	$ 278,809
Global S&BT [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue									171,927	169,660	146,224
Oracle Solutions [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue									77,772	76,320	74,886
SAP Solutions [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue									46,891	47,762	57,699
Consulting and Software Support and Maintenance [Member] | Oracle Solutions [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue									77,772	76,320	74,886
Consulting and Software Support and Maintenance [Member] | SAP Solutions [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue									41,324	40,729	47,391
Software License Sales [Member] | SAP Solutions [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue									5,567	7,033	10,308
North America [Member] | Consulting [Member] | Global S&BT [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue									144,960	143,956	122,607
International [Member] | Consulting [Member] | Global S&BT [Member]
Disaggregation Of Revenue [Line Items]
Segment revenue									$ 26,967	$ 25,704	$ 23,617

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