Pension Plan And Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2014

Pension Plan And Other Postretirement Benefits [Abstract]

Net Periodic Pension And Other Postretirement Benefit Costs

	Pension Benefits
	For the three months ended
	March 31,
	2014		2013
	(in thousands)
Service cost	$	3,323	$	3,447
Interest cost		1,284		1,026
Expected return on plan assets		(1,788)		(1,534)
Amortization of prior service cost		26		26
Amortization of net loss		89		385
Net periodic benefit cost	$	2,934	$	3,350
	Postretirement Benefits
	For the three months ended
	March 31,
	2014		2013
	(in thousands)
Service cost	$	619	$	574
Interest cost		160		110
Amortization of prior service cost		4		4
Amortization of net loss		16		30
Net periodic benefit cost	$	799	$	718