Comprehensive Income (tables)

6 Months Ended

Jun. 30, 2011

Accumulated Other Comprehensive Income Loss Net Of Tax Abstract

Comprehensive Income Reconciliation [Text Block]

			Three Months Ended				Six Months Ended
			June 30,				June 30,
Thousands			2011		2010		2011		2010
Net income		$	2,193	$	6,888	$	42,966	$	50,496
	Amortization of employee benefit plan liability, net of tax		146		98		292		196
Total comprehensive income		$	2,339	$	6,986	$	43,258	$	50,692