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Summary of Significant Accounting Policies (Details 2) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Reconciliation of the changes in the Company's warranty liability    
Balance, beginning of period $ 453 [1] $ 556
Accruals for product warranties 162 123
Cost of warranty claims and adjustments (143) (151)
Balance, end of period $ 472 $ 528
[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 29, 2012.