Pension Benefits (Tables)

9 Months Ended

Sep. 30, 2013

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

Components of the net periodic benefit cost for both the Qualified and the Nonqualified Pension Plan

The following table presents the components of the net periodic benefit cost for the Pension Plans:

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2013			2012			2013			2012
	(in thousands)
Service cost	$	1,572		$	1,232		$	4,718		$	3,697
Interest cost	407			345			1,220			1,034
Expected return on plan assets that reduces periodic pension costs	(384		)	(286		)	(1,153		)	(858		)
Amortization of prior service costs	4			4			13			13
Amortization of net actuarial loss	306			197			917			591
Net periodic benefit cost	$	1,905		$	1,492		$	5,715		$	4,477