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Commitments and Contingencies (Details Textual) (USD $)
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3 Months Ended | 12 Months Ended | ||
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Mar. 31, 2012
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Dec. 29, 2012
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Dec. 31, 2011
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Jan. 01, 2011
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| Commitments and Contingencies (Textual) [Abstract] | ||||
| Liabilities recorded for obligations | $ 0 | $ 0 | ||
| One time payment to KLA | 2,500,000 | |||
| Legal settlement in operating expense | 2,500,000 | |||
| Rent expense | $ 2,200,000 | $ 1,800,000 | $ 1,400,000 | |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Intellectual property indemnification obligations. No definition available.
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| X | ||||||||||
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- Definition
Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses. No definition available.
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| X | ||||||||||
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- Definition
This element represents the expenses incurred by the entity which are directly related and attributable to receiving an award in settlement of litigation. No definition available.
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| X | ||||||||||
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- Definition
The amount of cash paid for the settlement of litigation or for other legal issues during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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