Employee Benefit Plans

6 Months Ended

Jun. 30, 2016

Pension and Other Postretirement Benefit Expense [Abstract]

Employee Benefit Plans

Employee Benefit Plans

The following table details the components of pension benefit costs (credits):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
	(In thousands)
Service cost	$	—		$	1		$	—		$	5
Interest cost	3,197			3,695			6,535			7,265
Expected return on plan assets	(4,444		)	(4,466		)	(8,982		)	(10,231		)
Curtailments	454			—			454			—
Amortization of other actuarial losses	924			3,185			1,681			5,243
Net costs (credits)	$	131		$	2,415		$	(312	)	$	2,282

The following table details the components of other postretirement benefit costs (credits):

	Three Months Ended June 30,						Six Months Ended June 30,
	2016			2015			2016			2015
	(In thousands)
Service cost	$	105		$	200		$	265		$	433
Interest cost	1,138			308			2,272			643
Curtailments	(970		)	—			(970		)	—
Amortization of prior service credits	(2,672		)	(2,083		)	(5,345		)	(4,167		)
Amortization of other actuarial losses (gains)	(566		)	(599		)	(1,132		)	(1,055		)
Net credit	$	(2,965	)	$	(2,174	)	$	(4,910	)	$	(4,146	)