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Geographic And Service Group Information (Narrative) (Details) (USD $) In Millions, unless otherwise specified | Jan. 02, 2015 | Dec. 27, 2013 | Dec. 28, 2012
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Geographic And Service Group Information [Abstract] |  |  |
Goodwill included in foreign assets | $ 15.0 hckt_GoodwillIncludedInForeignAsset | $ 15.8 hckt_GoodwillIncludedInForeignAsset | $ 15.6 hckt_GoodwillIncludedInForeignAsset

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- Definition Goodwill included in foreign asset. + References No definition available. + Details
Name: | hckt_GoodwillIncludedInForeignAsset
Namespace Prefix: | hckt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration