Pension and Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2013

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

Components of net periodic cost

The components of the net periodic cost of the Company's defined benefit pension and other postretirement plans for the quarters ended March 31, 2013 and April 1, 2012 are as follows:

	Pension						Postretirement
	Mar. 31, 2013			April 1, 2012			Mar. 31, 2013			April 1, 2012
Service cost	$	1,502			1,198			188			184
Interest cost		4,795			5,494			345			440
Expected return on assets		(5,541	)		(5,671	)		-			-
Net amortization and deferrals		2,392			1,908			(65	)		20
Curtailment loss		2,959			-			-			-
Net periodic benefit cost	$	6,107			2,929			468			644