Employee Benefit Plans (Tables)

6 Months Ended

Jun. 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 June 30,						Six months ended June 30,
(in thousands)	2012			2011			2012			2011
Components of net periodic benefit cost:
Service cost	$	2,632		$	2,293		$	5,264		$	4,586
Interest cost	2,700			2,740			5,400			5,480
Expected long-term return on assets	(3,563		)	(3,868		)	(7,126		)	(7,736		)
Actuarial loss	2,099			1,609			4,198			3,218
Prior service cost amortization	129			124			259			248
Net periodic expense	$	3,997		$	2,898		$	7,995		$	5,796

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 June 30,						Six months ended June 30,
(in thousands)	2012			2011			2012			2011
Components of net periodic benefit cost:
Service cost	$	463		$	442		$	927		$	885
Interest cost	1,062			1,111			2,124			2,222
Expected long-term return on assets	(1,109		)	(1,104		)	(2,219		)	(2,209		)
Actuarial loss	9			—			18			—
Transition amortization	479			479			959			958
Net periodic expense	$	904		$	928		$	1,809		$	1,856