Derivative Financial Instruments - Summary of Fair Values and Classification in Condensed Consolidated Balance Sheets of Derivative Instruments (Detail) - Commodity derivative instruments - USD ($) $ in Thousands	Sep. 27, 2020	Dec. 29, 2019
Assets:
Total assets	$ 1,049	$ 1,007
Liabilities:
Total liabilities	1,376	1,174
Gross commodity derivative instrument assets	1,049	3,298
Gross commodity derivative instrument liabilities	1,376	3,465
Prepaid expenses and other current assets
Assets:
Total assets	1,049	1,007
Other accrued liabilities
Liabilities:
Total liabilities	$ 1,376	$ 1,174