Restructuring Restructuring Charges by Type of Charge (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Restructuring Cost and Reserve [Line Items]
Charges to Expense	$ 1,132	$ 4,663	$ 5,817
Cumulative charges incurred	15,311
Gain (Loss) on Disposition of Assets [Member]
Restructuring Cost and Reserve [Line Items]
Charges to Expense	0	0	2,270
Cumulative charges incurred	2,270
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Charges to Expense	1,090	4,123	472
Cumulative charges incurred	5,685
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Charges to Expense	42	540	3,075
Cumulative charges incurred	$ 7,356