XML 57 R43.htm IDEA: XBRL DOCUMENT v3.3.1.900

Summary of Significant Accounting Policies (Details 3)	12 Months Ended
	Jan. 02, 2016
Computer and research equipment [Member]
Property Plant And Equipment [Line Items]
Estimated useful life	3 years
Furniture [Member]
Property Plant And Equipment [Line Items]
Estimated useful life	5 years
Capital leases and leasehold improvements [Member]
Property Plant And Equipment [Line Items]
Capital leases and leasehold improvements	Lesser of economic benefit period or term of lease
Minimum [Member] | Machinery [Member]
Property Plant And Equipment [Line Items]
Estimated useful life	2 years
Minimum [Member] | Tooling [Member]
Property Plant And Equipment [Line Items]
Estimated useful life	2 years
Minimum [Member] | Software and Software Development Costs [Member]
Property Plant And Equipment [Line Items]
Estimated useful life	5 years
Maximum [Member] | Machinery [Member]
Property Plant And Equipment [Line Items]
Estimated useful life	5 years
Maximum [Member] | Tooling [Member]
Property Plant And Equipment [Line Items]
Estimated useful life	5 years
Maximum [Member] | Software and Software Development Costs [Member]
Property Plant And Equipment [Line Items]
Estimated useful life	7 years

X

- Definition

Capital leases and leasehold improvements terms.

+ References

No definition available.

+ Details

Name:	irbt_CapitalLeasesAndLeaseholdImprovementsTerms
Namespace Prefix:	irbt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ComputerEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LeaseholdsAndLeaseholdImprovementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ToolsDiesAndMoldsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: