Accounts Receivable, Net - Reconciliation of Beginning and Ending Amount of Allowance for Contract Losses and Doubtful Accounts (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 02, 2021	Apr. 02, 2021	Apr. 03, 2020
Receivables [Abstract]
Balance at January 1, 2021	$ 3,995
Provision for contract losses and doubtful accounts	645	$ 645	$ 2,383
Write-offs	(159)
Balance at April 2, 2021	$ 4,481	$ 4,481