Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Components Of Net Periodic Benefit Cost For The Terra Nova Pension Plan

The following table presents the components of net periodic benefit cost (income) for the Terra Nova Pension Plan, a defined benefit plan.

	Three Months Ended March 31,
(dollars in thousands)	2012			2011
Service cost	$	90		$	337
Interest cost	1,693			1,768
Expected return on plan assets	(2,432		)	(2,443		)
Amortization of net actuarial pension loss	643			474
Net periodic benefit cost (income)	$	(6	)	$	136