Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2018

Derivative Financial Instruments (Thousands of Dollars) [Abstract]

Summary of Cash Flow Hedging Instruments

	September 30, 2018				October 1, 2017				December 31, 2017
	Notional		Fair		Notional		Fair		Notional		Fair
Hedged transaction	Amount		Value		Amount		Value		Amount		Value
Inventory purchases	$	555,661		6,827		894,529		(16,597)		756,673		(13,695)
Sales		319,421		13,027		579,421		17,215		423,315		16,144
Royalties and Other		117,534		(2,420)		266,670		(12,567)		196,889		(10,383)
Total	$	992,616		17,434		1,740,620		(11,949)		1,376,877		(7,934)

Derivatives Fair Value by Balance Sheet Location

	September 30,		October 1,		December 31,
	2018		2017		2017
Prepaid expenses and other current assets
Unrealized gains	$	15,414		10,207		13,666
Unrealized losses		(4,079)		(7,977)		(10,319)
Net unrealized gains	$	11,335		2,230		3,347
Other assets
Unrealized gains	$	9,591		11,631		11,255
Unrealized losses		(1,455)		(3,139)		(2,376)
Net unrealized gains	$	8,136		8,492		8,879
Accrued liabilities
Unrealized gains	$	596		5,354		4,215
Unrealized losses		(1,182)		(20,999)		(15,484)
Net unrealized losses	$	(586)		(15,645)		(11,269)
Other liabilities
Unrealized gains	$	1,035		8,325		4,546
Unrealized losses		(2,486)		(15,351)		(13,437)
Net unrealized losses	$	(1,451)		(7,026)		(8,891)

Schedule of Derivative Instruments, Gain (Loss) in Statement of Operations

	Quarter Ended				Nine Months Ended
	September 30,		October 1,		September 30,		October 1,
	2018		2017		2018		2017
Statements of Operations Classification
Cost of sales	$	3,358		(5,971)		(1,483)		6,614
Net revenues		1,328		2,316		2,090		3,332
Other		(17)		(2,311)		(101)		(2,716)
Net realized (losses) gains	$	4,669		(5,966)		506		7,230

Fair values of undesignated derivative financial instruments

	September 30,		October 1,		December 31,
	2018		2017		2017
Prepaid expenses and other current assets
Unrealized gains	$	2,060		2,606		-
Unrealized losses		(1,452)		(1,353)		-
Net unrealized gains	$	608		1,253		-
Accrued liabilities
Unrealized gains	$	12		-		1,793
Unrealized losses		(33)		-		(4,684)
Net unrealized losses		(21)		-		(2,891)
Other Liabilities
Unrealized gains	$	30		-		-
Unrealized losses		(85)		-		-
Net unrealized losses		(55)		-		-
Total unrealized gains (losses), net	$	532		1,253		(2,891)