Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies (Details 3)

v2.4.0.8
Significant Accounting Policies (Details 3) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Jan. 01, 2011
Changes in warranty accrual          
Beginning Balance $ 41   $ 47 $ 61 $ 71
Standard accrual based on units sold (4) 10 (12) 34  
Actual costs incurred 10 (4) 36 (12)  
Periodic accrual adjustments (8) (12) (32) (38)  
Ending Balance $ 39 $ 55 $ 39 $ 55 $ 71