Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2012

Summary of Components of Net Periodic Pension Cost

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

	Three Months Ended						Nine Months Ended
	September 30, 2012			September 30, 2011			September 30, 2012			September 30, 2011
Service cost	$	230		$	729		$	655		$	3,742
Interest cost		164			301			554			952
Expected return on assets		(553	)		(742	)		(1,778	)		(2,370	)
Prior service costs		110			158			328			509
Amortization of losses		5			—			5			—
Curtailment charges		—			2,887			—			2,887
Settlement charges		147			326			1,110			2,039
Net periodic pension cost	$	103		$	3,659		$	874		$	7,759