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Summary of Significant Accounting Policies (Product Warranties) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 02, 2016
Jan. 03, 2015
Dec. 28, 2013
Product Warranty Accrual [Roll Forward]      
Balance at the beginning of the period $ 16,719 $ 13,840 $ 13,055
Accrual assumed from acquisition 0 1,100 0
Accruals for warranties issued during the period 19,995 18,951 21,878
Accrual(Recovery) related to pre-existing warranties (334) 172 106
Settlements made during the period (20,153) (17,344) (21,199)
Balance at the end of the period $ 16,227 $ 16,719 $ 13,840