Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2013

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)	2013			2012			2013			2012
Components of net periodic benefit cost:
Service cost	$	3,602		$	2,632		$	10,806		$	7,895
Interest cost	2,725			2,700			8,161			8,101
Expected long-term return on assets	(3,713		)	(3,563		)	(11,139		)	(10,689		)
Actuarial loss	3,597			2,099			10,962			6,297
Prior service cost amortization	123			129			367			388
Settlement charge	17			—			161			—
Net periodic expense	$	6,351		$	3,997		$	19,318		$	11,992

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)	2013			2012			2013			2012
Components of net periodic benefit cost:
Service cost	$	444		$	463		$	1,333		$	1,390
Interest cost	869			1,062			2,605			3,186
Expected long-term return on assets	(1,242		)	(1,109		)	(3,727		)	(3,328		)
Actuarial loss	—			9			—			27
Transition amortization	324			479			973			1,438
Net periodic expense	$	395		$	904		$	1,184		$	2,713