Fair Value of Financial Instruments (Tables)

6 Months Ended

Jul. 01, 2018

Fair Value of Financial Instruments (Thousands of Dollars) [Abstract]

Fair Value Hierarchy

	Fair Value Measurements Using:
			Quoted
			Prices in
			Active
			Markets		Significant
			for		Other		Significant
			Identical		Observable		Unobservable
	Fair		Assets		Inputs		Inputs
	Value		(Level 1)		(Level 2)		(Level 3)
July 1, 2018
Assets:
Available-for-sale securities	$	3,054		3,054		-		-
Derivatives		22,551		-		22,551		-
Total assets	$	25,605		3,054		22,551		-
Liabilities:
Derivatives	$	5,191		-		5,191		-
Option agreement		23,546		-		-		23,546
Total liabilities	$	28,737		-		5,191		23,546
July 2, 2017
Assets:
Available-for-sale securities	$	4,096		4,096		-		-
Derivatives		25,372		-		25,372		-
Total assets	$	29,468		4,096		25,372		-
Liabilities:
Derivatives	$	22,244		-		22,244		-
Option agreement		28,500		-		-		28,500
Total liabilities	$	50,744		-		22,244		28,500
December 31, 2017
Assets:
Available-for-sale securities	$	3,126		3,126		-		-
Derivatives		12,226		-		12,226		-
Total assets	$	15,352		3,126		12,226		-
Liabilities:
Derivatives	$	23,051		-		23,051		-
Option agreement		23,980		-		-		23,980
Total Liabilities	$	47,031		-		23,051		23,980

Reconciliation of Level 3 Fair Value

	2018		2017
Balance at beginning of year	$	(23,980)		(28,770)
Gain from change in fair value		434		270
Balance at end of second quarter	$	(23,546)		(28,500)