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Summary of Significant Accounting Policies (Details 3) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Jul. 02, 2011
Reconciliation of the changes in the Company's warranty liability
Balance, beginning of period	$ 556	[1]	$ 607
Accruals for product warranties	85		83
Cost of warranty claims and adjustments	(116)		(62)
Balance, end of period	$ 525		$ 628
[1] Derived from the audited consolidated financial statements included in the annual report filed on Form 10-K with the SEC for the year ended December 31, 2011.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Total increases or decreases in the standard product warranty liability for the period. Does not include increases or decreases in an extended warranty liability.

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Represents the aggregate increase in the liability for accruals related to standard product warranties issued during the reporting period. Does not include any increase in the liability for accruals related to extended product warranties.

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