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Commitments and Contingencies (Details Textual) - USD ($) $ in Millions | 12 Months Ended
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Jan. 02, 2016 | Dec. 27, 2014 | Dec. 28, 2013
Commitments and Contingencies (Textual) [Abstract] |  |  |
Rental expense under operating leases | $ 4.9 | $ 4.8 | $ 5.3
Contractual Obligation | $ 74.7 |  |

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- Definition Commitments and Contingencies. + References No definition available. + Details
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Namespace Prefix: | irbt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments. + References No definition available. + Details
Name: | us-gaap_ContractualObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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Namespace Prefix: | us-gaap_
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