Postretirement Benefits (Tables)

6 Months Ended

Jun. 30, 2017

Retirement Benefits [Abstract]

Schedule of cost of pension plans

The cost of our pension plans are as follows:

(in thousands)	Three months ended June 30,						Six months ended June 30,
	2017			2016			2017			2016
Service cost for benefits earned	$	7,776		$	7,050		$	15,553		$	14,100
Interest cost on benefits obligation	8,568			8,282			17,137			16,563
Expected return on plan assets	(10,316		)	(9,880		)	(20,633		)	(19,760		)
Prior service cost amortization	218			174			436			348
Net actuarial loss amortization	2,325			2,027			4,650			4,055
Pension plan cost (1)	$	8,571		$	7,653		$	17,143		$	15,306

(1) Pension plan costs represent the total cost before reimbursements to Indemnity from the Exchange and EFL.