Employee Benefits

3 Months Ended

Mar. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Employee Benefits

EMPLOYEE BENEFITS

Net Periodic Benefit Cost

The components of the net periodic benefit cost for our pension and postretirement benefit plans are as follows:

	Pension Plan						Postretirement Benefit Plan
Three Months Ended March 31,	2014			2013			2014		2013
Net periodic benefit cost
Service cost	$	1,303		$	1,282		$	924	$	753
Interest cost	1,468			1,262			586		424
Expected return on plan assets	(1,739		)	(1,336		)	—		—
Amortization of net loss	544			1,106			224		136
Net periodic benefit cost	$	1,576		$	2,314		$	1,734	$	1,313

Employer Contributions

We previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2013 that we expected to contribute $6,260 to the pension plan in 2014. For the three-month period ended March 31, 2014, we contributed $1,750 to the pension plan. We anticipate that the total contribution in 2014 will not vary significantly from our expected contribution.