Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2017

Compensation and Retirement Disclosure [Abstract]

Schedule of cost of pension plans

The cost of our pension plans are as follows:

(in thousands)	Three months ended March 31,
	2017			2016
Service cost for benefits earned	$	7,777		$	7,050
Interest cost on benefits obligation	8,569			8,281
Expected return on plan assets	(10,317		)	(9,880		)
Prior service cost amortization	218			174
Net actuarial loss amortization	2,325			2,028
Pension plan cost (1)	$	8,572		$	7,653

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