Employee Benefit Plans (Tables) (Defined Benefit Pension)

9 Months Ended

Sep. 30, 2013

Defined Benefit Pension

Defined Benefit Plan Disclosure [Line Items]

Schedule of Net Benefit Costs

For the three-month and nine-month periods ended September 30, 2013, and 2012 the components of pension expense are as follows:

	Three months ended September 30						Nine months ended September 30
	2013			2012			2013			2012
	(dollars in thousands)
Service cost	$	3,765		$	4,012		$	12,248		$	10,387
Interest cost	5,460			7,151			17,764			17,293
Expected return on assets	(6,393		)	(8,576		)	(20,798		)	(20,710		)
Amortization of prior service cost	53			53			158			158
Amortization of net actuarial loss	4,245			2,735			12,738			8,210
Total pension expense	$	7,130		$	5,375		$	22,110		$	15,338