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Income Taxes (Detail And Activity Of The ASC 740-10 Liability) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 02, 2015	Dec. 27, 2013
Income Taxes [Abstract]
Unrecognized Tax Benefits, Beginning Balance	$ 716us-gaap_UnrecognizedTaxBenefits	$ 1,015us-gaap_UnrecognizedTaxBenefits
Additions based on tax positions	76hckt_UnrecognizedTaxBenefitsPeriodIncrease
Reduction for prior year tax deductions		(299)hckt_UnrecognizedTaxBenefitsPeriodDecrease
Unrecognized Tax Benefits, Ending balance	$ 792us-gaap_UnrecognizedTaxBenefits	$ 716us-gaap_UnrecognizedTaxBenefits

X

- Definition

Unrecognized Tax Benefits, Period Decrease

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

Unrecognized Tax Benefits, Period Increase

+ References

No definition available.

+ Details

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Namespace Prefix:	hckt_
Data Type:	xbrli:monetaryItemType
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X

- Details

Name:	us-gaap_IncomeTaxDisclosureAbstract
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Data Type:	xbrli:stringItemType
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Period Type:	duration

X

- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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