Employee Benefit Plans (Tables)

3 Months Ended

9 Months Ended

Sep. 30, 2011

Sep. 30, 2011

Employee Benefit Plans

Schedule Of Net Periodic Benefit Cost (Credit)

	Pension Plans						Post-Retirement Medical Plans
	Three Months Ended September 30,
	2011			2010			2011		2010
Components of Net Periodic Benefit Cost (Credit):
Service cost	$	163		$	160		$	18	$	20
Interest cost		7,242			6,921			70		73
Expected return on plan assets		(7,763	)		(7,372	)		–		–
Amortization of:
Prior service cost (credit)		756			632			–		(332	)
Net actuarial loss		65			203			–		–
Net periodic benefit cost (credit)	$	463		$	544		$	88	$	(239	)

	Pension Plans						Post-Retirement Medical Plans
	Nine Months Ended September 30,
	2011			2010			2011		2010
Components of Net Periodic Benefit Cost (Credit):
Service cost	$	495		$	420		$	52	$	60
Interest cost		21,401			20,708			209		219
Expected return on plan assets		(23,029	)		(21,801	)		–		–
Amortization of:
Prior service cost (credit)		2,258			2,108			–		(1,023	)
Net actuarial loss		194			602			–		–
Net periodic benefit cost (credit)	$	1,319		$	2,037		$	261	$	(744	)