Defined Benefit Pension Plans (Tables)

9 Months Ended

Sep. 30, 2014

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

Components of Net Periodic Benefit Cost

The composition of net periodic benefit cost was as follows for the periods indicated:

(Dollars in thousands)	Qualified Pension Plan												Non-Qualified Retirement Plans
	Three months						Nine months						Three months					Nine months
Periods ended September 30,	2014			2013			2014			2013			2014		2013			2014		2013
Service cost		$538			$710			$1,614			$2,171			$11		$48			$34		$147
Interest cost	723			722			2,168			2,160			119		116			358		346
Expected return on plan assets	(1,016		)	(931		)	(3,047		)	(2,780		)	—		—			—		—
Amortization of prior service cost	(6		)	17			(17		)	—			—		—			—		—
Recognized net actuarial loss	115			354			345			1,182			18		47			53		145
Curtailment	—			(61		)	—			(61		)	—		(2		)	—		(2		)
Net periodic benefit cost		$354			$811			$1,063			$2,672			$148		$209			$445		$636