Employee Benefits (Tables)

6 Months Ended

Jun. 28, 2014

Employee Benefits

Schedule of net periodic benefit cost of plans

	Three Months Ended						Six Months Ended
	June 28,			June 29,			June 28,			June 29,
(Thousands of dollars)	2014			2013			2014			2013
Components of net periodic benefit cost:
Service cost	$	2,004		$	2,263		$	3,860		$	4,684
Interest cost	2,418			2,035			4,821			4,103
Expected return on plan assets	(2,179		)	(1,614		)	(4,364		)	(3,226		)
Amortization and other	581			1,543			1,051			3,179
Agreement termination gain	-			(3,204		)	-			(3,204		)
Net periodic benefit cost	$	2,824		$	1,023		$	5,368		$	5,536