Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

The net periodic benefit cost for the Corporation’s Pension Plan, as determined by consulting actuaries, consisted of the following components:

	Three months ended March 31
	2013			2012
	(in thousands)
Service cost (1)	$	51		$	39
Interest cost	772			806
Expected return on plan assets	(800		)	(808		)
Net amortization and deferral	596			420
Net periodic benefit cost	$	619		$	457

(1) The Pension Plan service cost recorded for the three months ended March 31, 2013 and 2012, respectively, was related to administrative costs associated with the plan and was not due to the accrual of additional participant benefits.

The net periodic benefit cost for the Corporation’s Postretirement Plan, as determined by consulting actuaries, consisted of the following components:

	Three months ended March 31
	2013			2012
	(in thousands)
Service cost	$	57		$	53
Interest cost	81			87
Expected return on plan assets	—			(1		)
Net accretion and deferral	(91		)	(91		)
Net periodic benefit cost	$	47		$	48