Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2011

Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]

Components of Comprehensive Income

The following table details the components of comprehensive income for the quarters and nine months ended September 30:

	Quarter Ended						Nine Months Ended
	September 30,						September 30,
(Dollars in thousands)	2011			2010			2011			2010
Net earnings	$	25,599		$	18,080		$	41,744		$	31,018
Other comprehensive income (loss), net of tax
Defined benefit pension plans and other postretirement employee benefits:
Amortization of prior service credit included in net periodic cost, net of tax of $(765), $(757), $(2,297) and $(2,270)	(1,198		)	(1,183		)	(3,592		)	(3,550		)
Amortization of actuarial loss included in net periodic cost, net of tax of $1,354, $1,248, $4,061 and $3,746	2,117			1,953			6,351			5,858
Curtailment gain, net of tax of $0, $0, $0 and $(100)	—			—			—			(156		)
Recognition of deferred taxes related to actuarial gain on OPEB obligations	—			(113		)	—			5,580
Other comprehensive income, net of tax	919			657			2,759			7,732
Comprehensive income	$	26,518		$	18,737		$	44,503		$	38,750
Other comprehensive income, net of tax, related to:
Defined benefit pension plans	$	1,616		$	1,370		$	4,849		$	4,149
OPEB obligations	(697		)	(713		)	(2,090		)	3,583
Other comprehensive income, net of tax	$	919		$	657		$	2,759		$	7,732