Employee Benefits (Tables)

3 Months Ended

Mar. 29, 2014

Employee Benefits

Schedule of net periodic benefits cost of plans

	Three Months Ended
	March 29,		March 30,
(Thousands of dollars)	2014		2013
Components of net periodic benefit cost:
Service cost	$ 1,856		$ 2,421
Interest cost	2,403		2,068
Expected return on plan assets	(2,185	)	(1,612	)
Amortization and other	470		1,636
Net periodic benefit cost	$ 2,544		$ 4,513