v2.4.0.6

Industry Segment Geographic Information and Significant Customers (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Oct. 01, 2011	Jul. 02, 2011	Apr. 02, 2011	Jan. 01, 2011	Oct. 02, 2010	Jul. 03, 2010	Apr. 03, 2010	Dec. 31, 2011		Jan. 01, 2011		Jan. 02, 2010
Revenue:
Total revenue	$ 130,768	$ 120,373	$ 108,082	$ 106,277	$ 113,995	$ 94,223	$ 97,804	$ 94,930	$ 465,500		$ 400,952		$ 298,617
Cost of revenue:
Total cost of revenue									273,382		255,520		207,421
Gross margin:
Gross margin	56,085	50,043	42,536	43,454	45,488	33,257	33,970	32,717	192,118		145,432		91,196
Research and development									36,498	[1]	24,809	[1]	14,747	[1]
Selling and marketing									58,544	[1]	50,535	[1]	40,902	[1]
General and administrative									43,753	[1]	36,618	[1]	30,110	[1]
Other income (expense), net									218		504		(81)
Income before income taxes									53,541		33,974		5,356
Home Robots [Member]
Revenue:
Total revenue									278,551		229,348		165,860
Cost of revenue:
Total cost of revenue									152,723		137,568		112,429
Gross margin:
Gross margin									125,828		91,780		53,431
Government & Industrial Robots [Member]
Revenue:
Total revenue									186,949		171,604		132,757
Cost of revenue:
Total cost of revenue									120,659		117,952		94,992
Gross margin:
Gross margin									$ 66,290		$ 53,652		$ 37,765
[1] Stock-based compensation recorded in fiscal 2011, 2010 and 2009 breaks down by expense classification as follows:

X

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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-Publisher SEC

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The aggregate total amount of expenses directly related to the marketing or selling of products or services.

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