Reorganization and Expense-Reduction Program Costs (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
2008-2009 Actions [Member]
Remaining liabilities and payment activities
Adjustments	$ 34
2008-2009 Actions [Member] | Facility costs [Member]
Remaining liabilities and payment activities
Remaining Liability, Beginning Balance	5,852
Amounts Paid and Charged Against the liability	(674)
Adjustments	34
Remaining Liability, Ending Balance	5,212
Prior to 2006 Actions [Member] | Facility costs [Member]
Remaining liabilities and payment activities
Remaining Liability, Beginning Balance	2,428
Amounts Paid and Charged Against the liability	(144)
Adjustments	48
Remaining Liability, Ending Balance	$ 2,332