Employee Benefits (Tables)

3 Months Ended

Mar. 31, 2014

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 ended March 31, 2014 and 2013 were as follows (in thousands):

	Three Months Ended
	March 31,
Pension benefits	2014			2013
Service cost	$	41		$	45
Interest cost		65			59
Amortization of prior service cost		—			7
Actuarial net loss		57			174
Net periodic benefit cost	$	163		$	285
Postretirement benefits
Service cost	$	—		$	1
Interest cost		8			9
Amortization of prior service cost		(754	)		(1,087	)
Actuarial net loss		535			611
Net periodic benefit credit	$	(211	)	$	(466	)