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Reconciliation of Total Amounts of Unrecognized Tax Benefits (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 02, 2021
Dec. 28, 2019
Income Tax Disclosure [Abstract]    
Unrecognized tax benefit at beginning of fiscal year $ 306 $ 750
Lapses of statutes of limitations $ (306) (444)
Unrecognized tax benefit at end of fiscal year   $ 306