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Income Taxes - Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 28, 2020
Mar. 30, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Balance at the beginning of the period $ 27,790 $ 26,108
Net reductions for lapse of statutes taken during the period (101) (43)
Net additions for tax positions taken during the current period 203 325
Balance at the end of the period $ 27,892 $ 26,390