Geographic And Group Information (Revenue By Service Group) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jul. 03, 2015	Jun. 27, 2014	Jul. 03, 2015	Jun. 27, 2014
Segment Reporting Information [Line Items]
Total revenue	$ 66,395	$ 61,052	$ 127,369	$ 115,957
The Hackett Group [Member]
Segment Reporting Information [Line Items]
Total revenue	55,991	49,151	107,583	95,284
ERP Solutions [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 10,404	$ 11,901	$ 19,786	$ 20,673

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).

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=26872669&loc=d3e20235-122688

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration