v2.4.0.8
Summary of Significant Accounting Policies - Changes in Product Warranty Accrual (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Movement In Standard And Extended Product Warranty Increase Decrease [Roll Forward]    
Warranty accrual, beginning of period $ 838 $ 698
Provision for warranty costs 1,280 1,222
Warranty expenditures (1,205) (1,221)
Warranty accrual, end of period $ 913 $ 699