New and Recently Adopted Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 28, 2019	Dec. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset	$ 33,870
Lease liabilities	$ 36,716
ASU 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use asset		$ 36,300
Lease liabilities		37,900
Reclassification of deferred rent and lease incentive liabilities to operating lease right-of-use assets		$ 1,600