Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

Pension Plans

Defined Benefit Plan Disclosure

Schedule of Net Benefit Costs

The components of net pension expense for the Company’s two defined benefit non-contributory pension plans and certain nonqualified supplemental pension plans were:

	Three months ended September 30,						Nine months ended September 30,
(in thousands)	2012			2011			2012			2011
Components of net periodic benefit cost:
Service cost	$	2,632		$	2,293		$	7,895		$	6,879
Interest cost	2,700			2,740			8,101			8,220
Expected long-term return on assets	(3,563		)	(3,868		)	(10,689		)	(11,603		)
Actuarial loss	2,099			1,609			6,297			4,826
Prior service cost amortization	129			124			388			372
Net periodic expense	$	3,997		$	2,898		$	11,992		$	8,694

Postretirement Benefit Plans

Defined Benefit Plan Disclosure

Schedule of Net Benefit Costs

The components of net periodic postretirement benefit expense for the Company’s postretirement benefit plans were:

	Three months ended September 30,						Nine months ended September 30,
(in thousands)	2012			2011			2012			2011
Components of net periodic benefit cost:
Service cost	$	463		$	442		$	1,390		$	1,327
Interest cost	1,062			1,111			3,186			3,332
Expected long-term return on assets	(1,109		)	(1,104		)	(3,328		)	(3,314		)
Actuarial loss	9			—			27			—
Transition amortization	479			479			1,438			1,438
Net periodic expense	$	904		$	928		$	2,713		$	2,783