Derivative Financial Instruments - Summary of Fair Values and Classification in Consolidated Condensed Balance Sheets of Derivative Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 30, 2018
Assets:
Total assets	$ 265
Liabilities:
Total liabilities	3,950	$ 10,305
Commodity Contract [Member] | Not Designated as Hedging Instruments [Member] | Other Assets [Member]
Assets:
Total assets	265
Commodity Contract [Member] | Not Designated as Hedging Instruments [Member] | Other Accrued Liabilities [Member]
Liabilities:
Total liabilities	$ 3,950	$ 10,305