Employee Benefits (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2015 and 2014 were as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
Pension benefits	2015			2014			2015			2014
Service cost	$	—		$	41		$	—		$	82
Interest cost		55			65			109			130
Amortization of prior service cost		—			—			—			—
Actuarial net loss		184			58			368			115
Net periodic benefit cost	$	239		$	164		$	477		$	327
Postretirement benefits
Service cost	$	—		$	—		$	—		$	—
Interest cost		1			7			8			15
Amortization of prior service cost		(29	)		(755	)		(58	)		(1,509	)
Actuarial net loss		328			488			762			1,023
Net periodic benefit cost (credit)	$	300		$	(260	)	$	712		$	(471	)