Defined Benefit and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2012

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 March 31,
	2012			2011
Net periodic benefit cost
Service cost	$	140		$	137
Interest cost		945			1,115
Expected return on plan assets		(1,400	)		(1,471	)
Recognized net actuarial loss		1,309			1,037
Net periodic benefit cost	$	994		$	818

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

	Three months ended March 31,
	2012		2011
Net periodic benefit cost
Service cost	$	170	$	147
Interest cost		517		569
Amortization of prior service cost		62		59
Recognized net actuarial loss		215		124
Net periodic benefit cost	$	964	$	899