Income Taxes Deferred Tax Assets Liabilities (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Operating Loss Carryforwards	$ 29,400,000
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	500,000
Deferred Tax Assets, Operating Loss Carryforwards	7,143,000	9,518,000
Deferred Tax Assets, Tax Credit Carryforwards	5,483,000	7,571,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Reserves	9,804,000	11,429,000
Deferred Tax Liabilities, Property, Plant and Equipment	(3,203,000)	3,611,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits		1,445,000
Deferred Tax Assets, Other	9,857,000	951,000
Deferred Tax Assets, Gross	33,487,000	34,525,000
Deferred Tax Assets, Valuation Allowance	(9,342,000)	(10,739,000)
Deferred Tax Assets, Net	24,145,000	23,786,000
Deferred Tax Liabilities, Goodwill and Intangible Assets, Intangible Assets	(2,174,000)	(197,000)
Deferred Tax Liabilities, Financing Arrangements	0	(16,652,000)
Deferred Tax Liabilities, Other	(4,830,000)	452,000
Deferred Tax Liabilities	(10,207,000)	(16,397,000)
Deferred Tax Assets (Liabilities), Net	13,938,000	7,389,000
Deferred Tax Assets, Net, Current	10,483,000	10,508,000
Deferred Tax Liabilities, Current	(4,676,000)	(921,000)
Deferred Tax Assets, Net, Noncurrent	13,662,000	13,278,000
Deferred Tax Liabilities, Noncurrent	(5,531,000)	(15,476,000)
Foreign Pension Plans, Defined Benefit [Member]
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Postretirement Benefits	1,200,000
Deferred Tax Assets, Net		$ 1,445,000