Defined Benefit Pension Plans Defined Benefit Pension Plans (Tables)

6 Months Ended

Jun. 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:

	June 30, 2011			December 31, 2010
	(in thousands)
Plan assets in other long term assets	$	(468	)	$	(412	)
Current portion of pension plan liability in wages and benefits payable	2,910			2,656
Long-term portion of pension plan liability	69,675			61,450
Net pension plan benefit liability	$	72,117		$	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 June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
	(in thousands)
Service cost	$	601		475			$	1,218		$	1,000
Interest cost	969			844			1,886			1,750
Expected return on plan assets	(83		)	(71		)	(163		)	(148		)
Amortization of actuarial net loss (gain)	14			(6		)	28			(13		)
Amortization of unrecognized prior service costs	19			—			37			—
Net periodic benefit cost	$	1,520		$	1,242		$	3,006		$	2,589