Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2015

Employee Benefits [Abstract]

Components of Net Periodic Benefit Cost (Credit) for our Defined Benefit Plans and Postretirement Benefit Plans

The components of net periodic benefit cost (credit) for our defined benefit plans and postretirement benefit plans for the three months and nine months ended September 30, 2015 and 2014 were as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
Pension benefits	2015			2014			2015			2014
Service cost	$	—		$	41		$	—		$	123
Interest cost		87			65			196			195
Amortization of prior service cost		—			—			—			—
Actuarial net loss		294			57			662			172
Net periodic benefit cost	$	381		$	163		$	858		$	490
Postretirement benefits
Service cost	$	—		$	1		$	—		$	1
Interest cost		12			7			20			22
Amortization of prior service cost		(27	)		(755	)		(85	)		(2,264	)
Actuarial net loss		382			513			1,144			1,535
Net periodic benefit cost (credit)	$	367		$	(234	)	$	1,079		$	(706	)