Accrued Expenses (Details) (USD $) In Thousands, unless otherwise specified	Mar. 28, 2015	Dec. 27, 2014
Accounts Payable, Current [Abstract]
Accrued warranty	$ 7,574	$ 7,769
Accrued Sales Tax	521irbt_AccruedSalesTax	867irbt_AccruedSalesTax
Accrued rent	693us-gaap_AccruedRentCurrent	701us-gaap_AccruedRentCurrent
Accrued direct fulfillment costs	694irbt_AccruedDirectFulfillmentCosts	1,346irbt_AccruedDirectFulfillmentCosts
Accrued customer deposits	640irbt_Accruedcustomerdeposits	702irbt_Accruedcustomerdeposits
Accrued sales commissions	299us-gaap_AccruedSalesCommissionCurrent	531us-gaap_AccruedSalesCommissionCurrent
Accrued accounting fees	376us-gaap_AccruedProfessionalFeesCurrent	167us-gaap_AccruedProfessionalFeesCurrent
Accrued other	3,525us-gaap_OtherAccruedLiabilitiesCurrent	6,618us-gaap_OtherAccruedLiabilitiesCurrent
Accrued expenses	14,322us-gaap_AccruedLiabilitiesCurrent	18,701us-gaap_AccruedLiabilitiesCurrent
Employee-related Liabilities, Current	$ 7,805	$ 16,235

Accrued customer deposits

No definition available.

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- Definition

Accrued direct fulfillment costs.

+ References

No definition available.

+ Details

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- Definition

Accrued Sales Tax

+ References

No definition available.

+ Details

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- Details

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Current Liabilities

-URI http://asc.fasb.org/extlink&oid=6509677

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6935-107765

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6911-107765

+ Details

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for contractual rent under lease arrangements. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for sales commissions. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

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- Definition

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

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- Definition

Amount as of the balance sheet date of the aggregate standard product warranty liability that is expected to be paid within one year or the normal operating cycle, if longer. Does not include the balance for the extended product warranty liability.

+ References

No definition available.

+ Details

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