Other Operating Items, Net (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Component of Operating Other Cost and Expense [Line Items]
Other operating charges, net	$ (2,196)	$ 2,262	$ (1,949)	$ 6,969
Gain on insurance proceeds			6,323
Acquisition Related Expenses
Component of Operating Other Cost and Expense [Line Items]
Other operating charges, net	6,242	370	6,272	370
Flood Expenses, Net of Recoveries
Component of Operating Other Cost and Expense [Line Items]
Other operating charges, net	(6,294)	1,143	(6,091)	1,143
Asset Write Downs
Component of Operating Other Cost and Expense [Line Items]
Other operating charges, net	(2,144)	852	(2,130)	929
Impairment of Trademark
Component of Operating Other Cost and Expense [Line Items]
Other operating charges, net	0	0	0	5,000
Measurement Period Adjustments
Component of Operating Other Cost and Expense [Line Items]
Other operating charges, net	0	(103)	0	(473)
Bargain Purchase Gain
Component of Operating Other Cost and Expense [Line Items]
Other operating charges, net				$ (309)