Pension Benefits (Tables)

6 Months Ended

Jun. 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 June 30,						For the Six Months Ended June 30,
	2013			2012			2013			2012
	(in thousands)
Service cost	$	1,914		$	1,515		$	3,146		$	2,465
Interest cost	468			393			813			689
Expected return on plan assets that reduces periodic pension costs	(483		)	(352		)	(769		)	(572		)
Amortization of prior service costs	5			9			9			9
Amortization of net actuarial loss	414			293			611			394
Net periodic benefit cost	$	2,318		$	1,858		$	3,810		$	2,985