XML 58 R44.htm IDEA: XBRL DOCUMENT v3.20.4
Summary of Significant Accounting Policies - Warranty Obligations (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 26, 2020
Dec. 28, 2019
Dec. 29, 2018
Movement in Standard Product Warranty Accrual [Roll Forward]      
Balance at beginning of year $ 1,942 $ 2,102 $ 3,662
Accruals 5,727 3,881 3,181
Settlements (3,751) (4,041) (4,741)
Balance at end of year $ 3,918 $ 1,942 $ 2,102