Postretirement Benefits (Tables)

9 Months Ended

Sep. 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 September 30,						Nine months ended September 30,
	2017			2016			2017			2016
Service cost for benefits earned	$	7,777		$	7,050		$	23,330		$	21,150
Interest cost on benefits obligation	8,569			8,281			25,706			24,844
Expected return on plan assets	(10,317		)	(9,880		)	(30,950		)	(29,640		)
Prior service cost amortization	218			174			654			522
Net actuarial loss amortization	2,325			2,029			6,975			6,084
Pension plan cost (1)	$	8,572		$	7,654		$	25,715		$	22,960

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