Retirement Benefits

9 Months Ended

Sep. 30, 2011

Retirement Benefits

Note 8. Retirement Benefits

The components of the net periodic pension benefit costs are as follows:

	Three Months Ended						Nine Months Ended
	Sept. 30,			Sept. 30,			Sept. 30,			Sept. 30,
	2011			2010			2011			2010
	(Dollars in thousands)
Service cost	$	2,925		$	3,293		$	10,435		$	10,078
Interest cost		7,162			7,151			21,477			21,171
Expected return on plan assets		(10,213	)		(9,375	)		(30,613	)		(26,168	)
Amortization of prior service cost		512			516			1,533			1,549
Amortization of actuarial losses		2,105			2,100			6,090			6,299
Curtailment gain		(449	)		-			(449	)		-
Net periodic benefit cost	$	2,042		$	3,685		$	8,473		$	12,929

The components of the net periodic other postretirement benefits costs are as follows:

	Three Months Ended						Nine Months Ended
	Sept. 30,			Sept. 30,			Sept. 30,			Sept. 30,
	2011			2010			2011			2010
	(Dollars in thousands)
Service cost	$	129		$	225		$	647		$	691
Interest cost		514			685			1,829			2,088
Amortization of prior service credit		(650	)		(643	)		(1,935	)		(1,926	)
Amortization of actuarial losses		(191	)		72			93			215
Net periodic benefit (credit) cost	$	(198	)	$	339		$	634		$	1,068

As previously disclosed in our consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2010, there are no significant minimum required contributions to our pension plans in 2011.