Business Acquisition (Details Textuals) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Jan. 01, 2012	Jan. 01, 2012	May 24, 2011
Business Acquisition
Effective date of acquisition		5/24/2011
Name of acquired entity		Pliant Technology, Inc.
Description of acquired entity		a developer of enterprise flash storage solutions
Description of primary reason for business combination		This acquisition represents a significant opportunity for the Company to participate in the enterprise storage solutions market.
Percentage acquired in business combination			100.00%
Cash consideration			$ 22.0
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		209
Weighted-Average amortization period of intangible assets (in years)		4.8
Acquisition-related costs related to legal, regulatory and accounting fees	$ 1.5

Amount of bridge loans given to acquire included in cash consideration.

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The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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With respect to a business combination completed during the period, this element provides a description of the business, other than the name, which may include the industry, size, products and other important information.

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Month, date and year in which the acquirer obtains control of the acquiree.

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Number of shares of equity interests issued or issuable to acquire entity.

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Name of the acquired entity.

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Percentage of voting equity interests acquired in the business combination.

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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This element represents a description of the primary reason for the business combination which may consist of general categories such as top-line growth, synergistic benefits, market share, and diversification and the more detailed factors that might apply.

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