Income Taxes Deferred Taxes (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Gross deferred tax assets:
Liabilities for dispositions and discontinued operations	$ 33,295	$ 34,416
Pension, postretirement and other employee benefits	62,382	37,653
Foreign and state NOL carryforwards	17,796	18,225
Tax credit carryforwards	4,443	13,795
Other	13,615	18,726
Total gross deferred tax assets	131,531	122,815
Less: Valuation allowance	(18,811)	(23,944)
Total deferred tax assets after valuation allowance	112,720	98,871
Gross deferred tax liabilities:
Accelerated depreciation	(62,594)	(65,683)
Repatriation of foreign earnings	(5,030)	(4,959)
Other	(4,021)	(5,309)
Total gross deferred tax liabilities	(71,645)	(75,951)
Net deferred tax asset	41,075	22,920
Net deferred tax asset (liability):
Current portion of deferred tax asset	17,133	15,506
Noncurrent portion of deferred tax asset	30,211	14,190
Noncurrent portion of deferred tax liability	(6,269)	(6,776)
Net deferred tax asset	$ 41,075	$ 22,920