Restructuring (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($) employees	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Restructuring Cost and Reserve [Line Items]
Fair value adjustment on available-for-sale assets		$ 3,212
Accrued liabilities for restructuring charges	$ 6,856	6,856	$ 1,873
Restructuring reserve, noncurrent	3,320	3,320
Early retirement program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges accrued	8,100
Early retirement program [Member] | Machine Clothing and Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Effect of cost savings		$ 4,300
Reduced Employee Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in employees | employees		50
Restructuring charges accrued		$ 11,400
Fair value adjustment on available-for-sale assets		$ 3,300
Reduced Employee Expenses [Member] | Machine Clothing [Member]
Restructuring Cost and Reserve [Line Items]
Reduction in employees | employees		200
Minimum [Member] | Early retirement program [Member]
Restructuring Cost and Reserve [Line Items]
Effect of cost savings	5,000
Maximum [Member] | Early retirement program [Member]
Restructuring Cost and Reserve [Line Items]
Effect of cost savings	$ 6,000