Pension Benefits (Tables)

9 Months Ended

Sep. 30, 2015

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,
	2015			2014			2015			2014
	(in thousands)
Service cost	$	1,989		$	1,584		$	5,963		$	4,752
Interest cost	624			548			1,872			1,643
Expected return on plan assets that reduces periodic pension costs	(546		)	(494		)	(1,637		)	(1,483		)
Amortization of prior service costs	4			4			13			13
Amortization of net actuarial loss	371			172			1,114			516
Net periodic benefit cost	$	2,442		$	1,814		$	7,325		$	5,441