Pension and Postretirement Benefits (Tables)

6 Months Ended

Jul. 02, 2017

Pension and Postretirement Benefits (Thousands of Dollars) [Abstract]

Components of net periodic cost

	Quarter Ended
	Pension				Postretirement
	July 2,		June 26,		July 2,		June 26,
	2017		2016		2017		2016
Service cost	$	921		995		173		133
Interest cost		4,430		4,604		295		293
Expected return on assets		(5,880)		(5,504)		-		-
Net amortization and deferrals		2,519		2,132		-		-
Net periodic benefit cost	$	1,990		2,227		468		426

	Six Months Ended
	Pension				Postretirement
	July 2,		June 26,		July 2,		June 26,
	2017		2016		2017		2016
Service cost	$	1,873		1,993		345		265
Interest cost		9,155		9,210		590		587
Expected return on assets		(12,161)		(11,011)		-		-
Net amortization and deferrals		5,213		4,264		-		-
Net periodic benefit cost	$	4,080		4,456		935		852