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Geographic And Service Group Information (Revenue By Service Group) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 27, 2013
Sep. 27, 2013
Jun. 28, 2013
Mar. 29, 2013
Dec. 28, 2012
Sep. 28, 2012
Jun. 29, 2012
Mar. 30, 2012
Dec. 27, 2013
Dec. 28, 2012
Dec. 30, 2011
Segment Reporting Information [Line Items]                      
Total revenue $ 52,604 $ 57,916 $ 58,961 $ 54,349 $ 55,042 $ 55,647 $ 57,964 $ 54,083 $ 223,830 $ 222,736 $ 209,063
The Hackett Group [Member]
                     
Segment Reporting Information [Line Items]                      
Total revenue                 184,112 187,787 181,824
ERP Solutions [Member]
                     
Segment Reporting Information [Line Items]                      
Total revenue                 $ 39,718 $ 34,949 $ 27,239