Defined Benefit Pension Plans Defined Benefit Pension Plans (Tables)

9 Months Ended

Sep. 30, 2011

Defined Benefit Pension Plans [Abstract]

Schedule of Amounts Recognized in the Consolidated Balance Sheets [Table Text Block]

Amounts recognized on the Consolidated Balance Sheets consist of:

	September 30, 2011			December 31, 2010
	(in thousands)
Plan assets in other long-term assets	$	(447	)	$	(412	)
Current portion of pension plan liability in wages and benefits payable	2,823			2,656
Long-term portion of pension plan liability	66,550			61,450
Net pension plan benefit liability	$	68,926		$	63,694

Schedule of Net Periodic Pension Benefit Costs [Table Text Block]

Net periodic pension benefit costs for our plans include the following components:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2011			2010			2011			2010
	(in thousands)
Service cost	$	637		493			$	1,855		$	1,493
Interest cost	947			858			2,833			2,608
Expected return on plan assets	(80		)	(73		)	(243		)	(221		)
Amortization of actuarial net loss (gain)	14			(6		)	42			(19		)
Amortization of unrecognized prior service costs	18			—			55			—
Net periodic benefit cost	$	1,536		$	1,272		$	4,542		$	3,861