Employee Benefits (Tables)

3 Months Ended

Mar. 31, 2013

Employee Benefits [Abstract]

Components of net periodic benefit cost for 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, 2013 and 2012 were as follows (in thousands):

	Three Months Ended
	March 31,
Pension benefits	2013			2012
Service cost	$	45		$	33
Interest cost		59			47
Amortization of prior service cost		7			28
Actuarial net loss		174			65
Net periodic benefit cost	$	285		$	173
Postretirement benefits
Service cost	$	1		$	1
Interest cost		9			25
Amortization of prior service cost		(1,087	)		(1,224	)
Actuarial net loss		611			648
Net periodic benefit credit	$	(466	)	$	(550	)