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Reportable Segments and Geographic Data (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Jan. 01, 2018
Nov. 20, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Oct. 31, 2013
Segment Reporting Information [Line Items]            
Operating lease expense     $ 5,448 $ 5,063    
Net sales     $ 900,610 1,054,132 $ 982,479  
Increase (decrease) in operating assets   $ 35,300        
US Government Contracts Or Programs | Revenue Benchmark | Product Concentration Risk            
Segment Reporting Information [Line Items]            
Concentration risk percentage     46.00%      
Albany Safran Composites, LLC            
Segment Reporting Information [Line Items]            
Ownership percentage of noncontrolling shareholder     10.00%      
Machine Clothing            
Segment Reporting Information [Line Items]            
Net sales     $ 572,955 601,254 611,858  
Increase (decrease) in operating assets $ 22,500          
AEC assets            
Segment Reporting Information [Line Items]            
Increase (decrease) in operating assets $ (14,100)          
Salt Lake City, Utah            
Segment Reporting Information [Line Items]            
Non-cash increase of lease modification         12,700  
Albany Aerostructures Composites LLC (AAC)            
Segment Reporting Information [Line Items]            
Receivables     127,100 114,500    
Safran            
Segment Reporting Information [Line Items]            
Operating lease expense     900      
Net sales     $ 99,000 $ 226,800 $ 186,300  
Safran | Albany Safran Composites, LLC            
Segment Reporting Information [Line Items]            
Ownership percentage of noncontrolling shareholder     10.00% 10.00%   10.00%