This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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Restructuring (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
Restructuring (Narrative) (Details) (USD $)	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Restructuring and other, net
Restructuring and other		$ 9,317,000	$ 3,747,000	$ 68,174,000
Write-down of joint venture				5,100,000
Impairment of Property, Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other		1,800,000
Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other	1,200,000	196,000	(1,193,000)	(6,624,000)
Paper Machine Clothing [Member]
Restructuring and other, net
Restructuring and other		3,260,000	3,705,000	66,941,000
Paper Machine Clothing [Member] \| Impairment of Property, Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other			1,200,000	8,600,000
Write-down of joint venture				5,100,000
Paper Machine Clothing [Member] \| Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other			752,000	(540,000)
Engineered Fabrics [Member]
Restructuring and other, net
Restructuring and other		2,420,000	1,057,000	4,311,000
Engineered Fabrics [Member] \| Impairment of Property, Plant and Equipment [Member]
Restructuring and other, net
Restructuring and other		4,800,000
Engineered Fabrics [Member] \| Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other		196,000		368,000
Unallocated Expenses [Member]
Restructuring and other, net
Restructuring and other		3,580,000	(1,945,000)	(3,430,000)
Unallocated Expenses [Member] \| Benefit Plan Curtailment/ Settlement [Member]
Restructuring and other, net
Restructuring and other			$ (1,945,000)	$ (6,452,000)