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Accrued Expenses - Summary of Accrued Contract Termination Costs (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Accrued Liabilities And Other Liabilities [Abstract]    
Accrued contract termination costs—beginning balance $ 392 $ 27
Contract termination costs incurred 3,449 1,461
Contract termination costs settled and paid $ (3,841) (1,096)
Accrued contract termination costs—ending balance   $ 392