Employee Benefits (Tables)

9 Months Ended

Sep. 29, 2012

Employee Benefits

Schedule of net periodic cost of benefits of plans

	Three Months Ended		Nine Months Ended
	September 29,	October 1,	September 29,	October 1,
(Thousands of dollars)	2012	2011	2012	2011
Components of net periodic benefit cost:
Service cost	$    2,221	$   1,840	$  6,657	$  5,572
Interest cost	2,220	2,243	6,655	6,786
Expected return on plan assets	(1,608)	(1,616)	(4,817)	(4,935)
Amortization and other	1,550	1,012	4,647	3,055
Settlement	-	-	1,796	-
Net periodic benefit cost	$    4,383	$  3,479	$14,938	$10,478