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Commitments and Contingencies (Details Textual) - USD ($) $ in Millions	12 Months Ended
	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

X

- 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

X

- 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

X

- 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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Balance Type:	debit
Period Type:	duration