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Geographic and Service Group Information (Revenue by Service Group) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2016	Sep. 30, 2016	Jul. 01, 2016	Apr. 01, 2016	Jan. 01, 2016	Oct. 02, 2015	Jul. 03, 2015	Apr. 03, 2015	Dec. 30, 2016	Jan. 01, 2016	Jan. 02, 2015
Segment Reporting Information [Line Items]
Total revenue	$ 62,946	$ 66,810	$ 68,178	$ 61,973	$ 60,261	$ 59,992	$ 59,423	$ 54,905	$ 288,561	$ 260,940	$ 236,737
The Hackett Group [Member]
Segment Reporting Information [Line Items]
Total revenue									246,210	221,341	196,145
SAP/ERP Solutions [Member]
Segment Reporting Information [Line Items]
Total revenue									$ 42,351	$ 39,599	$ 40,592

X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

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+ References

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