Reorganization and Expense-Reduction Program Costs (Details) (2011 Actions [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012
Reorganization costs and activities
Adjustments	$ 46
Employee Termination Benefits [Member]
Reorganization costs and activities
Remaining Liability, Beginning Balance	2,948
Amounts Paid and Charged Against the liability	(1,599)
Adjustments	(89)
Remaining Liability, Ending Balance	$ 1,260