Severance Costs (Tables)

9 Months Ended

Sep. 30, 2012

Schedule Of Aggregate Net Severance Charges

	Nine months ended September 30,
	2012				2011
Accrued severance charges, beginning of period		$	3,518			$	5,441
Payments for period			(2,157	)			(1,802	)
Interest accretion			163				236
Accrued severance charges, end of period		$	1,524			$	3,875