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Basis of Presentation and General Information (Reconciliation Of Basic And Diluted Weighted Average Shares)(Details) | 12 Months Ended
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Jan. 02, 2015 | Dec. 27, 2013 | Dec. 28, 2012
Basis Of Presentation And General Information [Abstract] |  |  |
Basic weighted average common shares outstanding | 28,718,263 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 30,283,298 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 31,703,544 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Unvested restricted stock units and common stock subject to vesting requirements issued to employees | 1,152,974 hckt_DilutiveRestrictedStockUnitsAndCommonStockSubjectToVestingRequirements | 1,809,565 hckt_DilutiveRestrictedStockUnitsAndCommonStockSubjectToVestingRequirements | 1,765,351 hckt_DilutiveRestrictedStockUnitsAndCommonStockSubjectToVestingRequirements
Common stock issuable upon the exercise of stock options | 9,765 hckt_DilutiveStockOptions | 22,802 hckt_DilutiveStockOptions | 41,817 hckt_DilutiveStockOptions
Dilutive weighted average common shares outstanding | 29,881,002 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 32,115,665 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 33,510,712 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding

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- Definition The sum of dilutive potential unvested restricted stock units and common stock subject to vesting requirements used in the calculation of the diluted per-share or per-unit computation. + References No definition available. + Details
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- Definition The sum of dilutive potential stock options used in the calculation of the diluted per-share or per-unit computation. + References No definition available. + Details
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 + Details
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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