Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2011

Notes to Financial Statements [Abstract]

Environmental Liabilities Table [Text Block]

	December 31,
	2011		2010
	(In thousands)
Current	$	9,353	$	10,648
Noncurrent		11,635		11,920
Total environmental liabilities	$	20,988	$	22,568