Defined Benefit Pension Plans (Tables)

6 Months Ended

Jun. 30, 2012

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

Components of Net Periodic Benefit Cost

For the periods indicated, the composition of net periodic benefit cost was as follows:

(Dollars in thousands)	Qualified Pension Plan												Non-Qualified Retirement Plans
	Three Months						Six Months						Three Months				Six Months
Periods ended June 30,	2012			2011			2012			2011			2012		2011		2012		2011
Service cost		$643			$578			$1,287			$1,157			$37		$18		$75		$36
Interest cost	706			644			1,412			1,289			126		124		252		248
Expected return on plan assets	(747		)	(698		)	(1,493		)	(1,397		)	—		—		—		—
Amortization of prior service cost	(9		)	(9		)	(17		)	(17		)	—		—		—		—
Recognized net actuarial loss	247			99			491			196			30		3		59		6
Net periodic benefit cost		$840			$614			$1,680			$1,228			$193		$145		$386		$290