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Net Fair Value of Commodity Price Risk (Detail) - USD ($) $ in Thousands	Jan. 02, 2021	Dec. 28, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Assets	$ 17,415	$ 3,780
Liabilities	(88)	(1,606)
Net Fair Value	17,327	2,174
Level 1
Derivative Instruments, Gain (Loss) [Line Items]
Assets	17,415	3,780
Liabilities	(88)	(1,606)
Net Fair Value	17,327	2,174
Other Current Assets
Derivative Instruments, Gain (Loss) [Line Items]
Assets	16,684	3,191
Other Current Assets | Level 1
Derivative Instruments, Gain (Loss) [Line Items]
Assets	16,684	3,191
Other LongTerm Assets
Derivative Instruments, Gain (Loss) [Line Items]
Assets	731	589
Other LongTerm Assets | Level 1
Derivative Instruments, Gain (Loss) [Line Items]
Assets	731	589
Other Current Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Liabilities	(5)	(814)
Other Current Liabilities | Level 1
Derivative Instruments, Gain (Loss) [Line Items]
Liabilities	(5)	(814)
Other LongTerm Liabilities
Derivative Instruments, Gain (Loss) [Line Items]
Liabilities	(83)	(792)
Other LongTerm Liabilities | Level 1
Derivative Instruments, Gain (Loss) [Line Items]
Liabilities	$ (83)	$ (792)

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