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Summary of Significant Accounting Policies (Details 2) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 30, 2013
Mar. 31, 2012
Reconciliation of the changes in the Company's warranty liability    
Balance, beginning of period $ 453 [1] $ 556
Accruals for product warranties 67 42
Cost of warranty claims and adjustments (74) (59)
Balance, end of period $ 446 $ 539
[1] Derived from the consolidated audited financial statements included in our Annual Report filed on Form 10-K with the SEC for the year ended December 29, 2012.