Employee Benefit Plans

6 Months Ended

Jun. 30, 2015

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,
	2015			2014			2015			2014
	(In thousands)
Service cost	$	1		$	5,477		$	5		$	11,401
Interest cost	3,695			4,192			7,265			8,556
Expected return on plan assets	(4,467		)	(5,879		)	(10,231		)	(11,857		)
Amortization of prior service costs (credits)	—			(53		)	—			(107		)
Amortization of other actuarial losses	3,185			532			5,243			1,480
Net benefit cost	$	2,414		$	4,269		$	2,282		$	9,473

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

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
	(In thousands)
Service cost	$	200		$	440		$	433		$	884
Interest cost	308			457			643			921
Amortization of prior service credits	(2,083		)	(2,501		)	(4,167		)	(5,002		)
Amortization of other actuarial losses (gains)	(599		)	(210		)	(1,055		)	(380		)
Net benefit credit	$	(2,174	)	$	(1,814	)	$	(4,146	)	$	(3,577	)