Provision For Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) (USD $)	Dec. 31, 2011		Dec. 31, 2010
Components Of Deferred Tax Assets And Liabilities [Line Items]
Net operating loss and credit carryforwards	$ 6,159,000	[1],[2]	$ 12,910,000	[1],[2]
Accruals	10,380,000	[1]	11,951,000	[1]
Inventories	11,431,000	[1]	9,713,000	[1]
Pensions	11,303,000	[1]	7,720,000	[1]
Total deferred tax assets	39,273,000	[1]	42,294,000	[1]
Property, plant and equipment	24,551,000		22,149,000
Goodwill and other intangible assets	6,454,000		4,719,000
U.S. liability on Belgian and German net deferred tax assets	1,292,000		479,000
Total deferred tax liabilities	32,297,000		27,347,000
Net deferred tax asset	6,976,000	[3]	14,947,000	[3]
Current deferred tax liabilities included in accounts payable and accrued liabilities	200,000		100,000
Federal [Member]
Components Of Deferred Tax Assets And Liabilities [Line Items]
Net operating loss and credit carryforwards	1,100,000		6,500,000
Foreign [Member]
Components Of Deferred Tax Assets And Liabilities [Line Items]
Net operating loss and credit carryforwards	$ 300,000		$ 0

[1] Uncertain tax liabilities of approximately $0.3 million and zero partially offset the net operating losses and credit carryforwards in 2011 and 2010, respectively.

[2] Net indirect benefits on uncertain tax liabilities of approximately $1.1 million and $6.5 million are included in the U.S. net operating loss and credit carryforwards in 2011 and 2010, respectively.

[3] A current deferred tax liability of $0.2 million and $0.1 million are included in accounts payable and accrued liabilities within the 2011 and 2010 consolidated balance sheets, respectively.