Defined Benefit and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2011

Defined Benefit and Other Postretirement Benefits [Abstract]

Net periodic benefit Cost

The following table presents information regarding the plan's net periodic benefit cost for the periods presented ($ in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
Net periodic benefit cost
Service cost	$	124		$	138		$	398		$	412
Interest cost		1,115			1,194			3,345			3,583
Expected return on plan assets		(1,470	)		(1,481	)		(4,412	)		(4,444	)
Recognized net actuarial loss		1,026			849			3,100			2,548
Net periodic benefit cost	$	795		$	700		$	2,431		$	2,099

The following table presents information regarding the plan's net periodic benefit cost for the periods presented ($ in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2011		2010		2011		2010
Net periodic benefit cost
Service cost	$	147	$	190	$	441	$	567
Interest cost		569		561		1,707		1,682
Amortization of prior service cost		59		38		177		114
Recognized net actuarial loss		124		88		372		266
Net periodic benefit cost	$	899	$	877	$	2,697	$	2,629