XML 49 R37.htm IDEA: XBRL DOCUMENT v3.4.0.3
Summary of Significant Accounting Policies - Changes in Product Warranty Accrual (Detail) - USD ($)
$ in Thousands
3 Months Ended
Apr. 02, 2016
Apr. 04, 2015
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]    
Warranty accrual, beginning of period $ 1,222 $ 1,416
Provision for warranty costs 405 339
Product Warranty Accrual, Preexisting, Increase (Decrease) (50) (17)
Settlements made (290) (258)
Warranty accrual, end of period $ 1,287 $ 1,480