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Geographic And Service Group Information (Long-Lived Assets Attributable To Geographic Area) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 02, 2015	Dec. 27, 2013	Dec. 28, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 95,730us-gaap_NoncurrentAssets	$ 90,341us-gaap_NoncurrentAssets	$ 90,677us-gaap_NoncurrentAssets
North America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	80,152us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember	74,095us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember	74,407us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember
International Primarily European Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total long-lived assets	$ 15,578us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = hckt_InternationalPrimarilyEuropeanCountriesMember	$ 16,246us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = hckt_InternationalPrimarilyEuropeanCountriesMember	$ 16,270us-gaap_NoncurrentAssets / us-gaap_StatementGeographicalAxis = hckt_InternationalPrimarilyEuropeanCountriesMember

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- Definition

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 280

-SubTopic 10

-Section 50

-Paragraph 41

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599

+ Details

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- Details

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