XML 72 R58.htm IDEA: XBRL DOCUMENT v3.3.1.900

Stock Options Plans and Stock-Based Compensation (Details 2) - $ / shares		12 Months Ended
	Oct. 02, 2012	Jan. 02, 2016
Summary of information about stock options outstanding
Range of Exercise Price, Minimum	$ 2.55	$ 3.54
Range of Exercise Price, Maximum	$ 4.81	$ 43.35
Number Outstanding		1,287,550
Options Outstanding Weighted Average Remaining Contractual Life		4 years
Weighted Average Exercise Price		$ 26.73
Number Exercisable		768,184
Weighted Average Exercise Price		$ 23.18
Range of Exercise Prices One [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		3.54
Range of Exercise Price, Maximum		$ 13.46
Number Outstanding		81,723
Options Outstanding Weighted Average Remaining Contractual Life		2 years 10 months 17 days
Weighted Average Exercise Price		$ 7.97
Number Exercisable		78,713
Weighted Average Exercise Price		$ 8.09
Range of Exercise Prices Two [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		14.52
Range of Exercise Price, Maximum		$ 14.52
Number Outstanding		144,017
Options Outstanding Weighted Average Remaining Contractual Life		1 year 3 months
Weighted Average Exercise Price		$ 14.52
Number Exercisable		144,017
Weighted Average Exercise Price		$ 14.52
Range of Exercise Prices Three [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		17.7
Range of Exercise Price, Maximum		$ 21.23
Number Outstanding		82,171
Options Outstanding Weighted Average Remaining Contractual Life		1 year 7 months 10 days
Weighted Average Exercise Price		$ 18.44
Number Exercisable		73,194
Weighted Average Exercise Price		$ 18.41
Range of Exercise Prices Four [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		22.86
Range of Exercise Price, Maximum		$ 22.86
Number Outstanding		166,757
Options Outstanding Weighted Average Remaining Contractual Life		4 years 1 month 5 days
Weighted Average Exercise Price		$ 22.86
Number Exercisable		112,252
Weighted Average Exercise Price		$ 22.86
Range of Exercise Prices Five [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		24.53
Range of Exercise Price, Maximum		$ 26.59
Number Outstanding		167,468
Options Outstanding Weighted Average Remaining Contractual Life		2 years 10 months 5 days
Weighted Average Exercise Price		$ 25.75
Number Exercisable		153,635
Weighted Average Exercise Price		$ 25.71
Range of Exercise Prices Six [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		29.60
Range of Exercise Price, Maximum		$ 32.38
Number Outstanding		162,225
Options Outstanding Weighted Average Remaining Contractual Life		6 years 6 months 5 days
Weighted Average Exercise Price		$ 31.04
Number Exercisable		1,500
Weighted Average Exercise Price		$ 31.22
Range of Exercise Prices Seven [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		33.29
Range of Exercise Price, Maximum		$ 33.48
Number Outstanding		159,940
Options Outstanding Weighted Average Remaining Contractual Life		3 years 3 months 7 days
Weighted Average Exercise Price		$ 33.42
Number Exercisable		125,453
Weighted Average Exercise Price		$ 33.46
Range of Exercise Prices Eight [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		33.72
Range of Exercise Price, Maximum		$ 34.3
Number Outstanding		168,599
Options Outstanding Weighted Average Remaining Contractual Life		6 years 2 months 28 days
Weighted Average Exercise Price		$ 34.13
Number Exercisable		12,671
Weighted Average Exercise Price		$ 33.72
Range of Exercise Prices Nine [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		34.67
Range of Exercise Price, Maximum		$ 37.08
Number Outstanding		107,648
Options Outstanding Weighted Average Remaining Contractual Life		5 years 4 months 3 days
Weighted Average Exercise Price		$ 35.83
Number Exercisable		44,991
Weighted Average Exercise Price		$ 35.66
Range of Exercise Prices Ten [Member]
Summary of information about stock options outstanding
Range of Exercise Price, Minimum		43.35
Range of Exercise Price, Maximum		$ 43.35
Number Outstanding		47,002
Options Outstanding Weighted Average Remaining Contractual Life		4 years 11 months 12 days
Weighted Average Exercise Price		$ 43.35
Number Exercisable		21,758
Weighted Average Exercise Price		$ 43.35

X

- Definition

Share based compensation shares authorized under stock options plans exercise price range end of period.

+ References

No definition available.

+ Details

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

X

- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

+ Details

Name:	us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesFiveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesSixMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesSevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesEightMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesNineMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=irbt_RangeOfExercisePricesTenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: