Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies Significant Accounting Policies (Details 3)

v2.4.0.8
Significant Accounting Policies Significant Accounting Policies (Details 3) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Jan. 01, 2011
Changes in warranty accrual          
Beginning Balance $ 42   $ 47 $ 66 $ 71
Standard accrual based on units sold 15 12 26 24  
Actual costs incurred (4) (4) (8) (8)  
Periodic accrual adjustments (12) (13) (24) (26)  
Ending Balance $ 41 $ 61 $ 41 $ 61 $ 71