Employee Benefit Plan (Tables)

3 Months Ended

Mar. 31, 2013

Summary of Components of Net Periodic Pension Cost (Benefit)

A summary of the components of net periodic pension cost (benefit) is as follows:

	Three Months Ended March 31,
	2013			2012
Service cost	$	258		$	1,040
Interest cost		170			881
Expected return on assets		(446	)		(2,606	)
Prior service costs		—			438
Amortization of loss		97			—
Net periodic pension cost (benefit)	$	79		$	(247	)