Employee Pension Benefits (Tables)

3 Months Ended

Mar. 31, 2012

Employee Pension Benefits [Abstract]

Schedule Of Components Of Net Periodic Pension Benefit Of The ESI Pension Plan And ESI Excess Pension Plan

	Three Months
	Ended March 31,
	2012			2011
Interest cost	$	530		$	598
Expected return on assets		(1,147	)		(1,147	)
Recognized net actuarial loss		695			476
Amortization of prior service (credit)		(388	)		(346	)
Net periodic pension (benefit)	($	310	)	($	419	)