Derivatives (Tables)

9 Months Ended

Sep. 28, 2019

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Summary of Fair Value of Hedges

The fair value of our aluminum hedges are classified in the accompanying consolidated balance sheets at September 28, 2019, and December 29, 2018, as follows (in thousands):

	Derivative Assets			Derivative Liabilities
	September 28, 2019			September 28, 2019
Derivatives designated as hedging
instruments under Subtopic 815-20:	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivative instruments:
Aluminum forward contracts	Other current assets	$	—	Accrued liabilities	$	(2,436	)
Aluminum forward contracts	Other assets		—	Other liabilities		(95	)
Total derivative instruments	Total derivative assets	$	—	Total derivative liabilities	$	(2,531	)
	Derivative Assets			Derivative Liabilities
	December 29, 2018			December 29, 2018
Derivatives designated as hedging
instruments under Subtopic 815-20:	Balance Sheet Location	Fair Value		Balance Sheet Location	Fair Value
Derivative instruments:
Aluminum forward contracts	Other current assets	$	—	Accrued liabilities	$	(3,907	)
Aluminum forward contracts	Other assets		—	Other liabilities		(211	)
Total derivative instruments	Total derivative assets	$	—	Total derivative liabilities	$	(4,118	)

Gains (Losses) on Derivative Financial Instruments

The following represents the gains (losses) on derivative financial instruments, and their classifications within the accompanying condensed consolidated financial statements, for the three and nine months ended September 28, 2019, and September 29, 2018 (in thousands):

	Derivatives in Cash Flow Hedging Relationships
	Amount of Gain or (Loss) Recognized in OCI(L) on Derivatives						Location of Gain or (Loss) Reclassified from Accumulated OCI(L) into Income	Amount of Gain or (Loss) Reclassified from Accumulated OCI(L) into Income
	Three Months Ended							Three Months Ended
	September 28,			September 29,				September 28,			September 29,
	2019			2018				2019			2018
Aluminum contracts	$	(1,136	)	$	(649	)	Cost of sales	$	(1,532	)	$	(58	)
	Derivatives in Cash Flow Hedging Relationships
	Amount of Gain or (Loss) Recognized in OCI(L) on Derivatives						Location of Gain or (Loss) Reclassified from Accumulated OCI(L) into Income	Amount of Gain or (Loss) Reclassified from Accumulated OCI(L) into Income
	Nine Months Ended							Nine Months Ended
	September 28,			September 29,				September 28,			September 29,
	2019			2018				2019			2018
Aluminum contracts	$	(2,083	)	$	(1,122	)	Cost of sales	$	(3,670	)	$	(15	)