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Reportable Segments and Revenue Recognition (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Oct. 31, 2013
Segment Reporting Information [Line Items]            
Net sales $ 232,442 $ 211,999 $ 689,322 $ 673,753    
Restructuring reserve 1,000   1,000      
Restructuring expenses, net 187 710 230 4,189    
Operating income 44,486 38,773 136,271 131,094    
Albany Engineered Composites            
Segment Reporting Information [Line Items]            
Net sales 78,271 73,252 227,024 244,971    
Restructuring expenses, net       2,600    
Operating income 2,100 3,500 2,400 9,500    
US Government Contracts Or Programs | Revenue Benchmark | Product Concentration Risk            
Segment Reporting Information [Line Items]            
Concentration risk percentage         46.00%  
Albany Aerostructures Composites LLC (AAC)            
Segment Reporting Information [Line Items]            
Receivables $ 103,400 $ 127,100 103,400 127,100    
Safran            
Segment Reporting Information [Line Items]            
Net sales     $ 81,600 $ 73,600    
Albany Safran Composites, LLC            
Segment Reporting Information [Line Items]            
Ownership percentage of noncontrolling shareholder 10.00%   10.00%      
Albany Safran Composites, LLC | Safran            
Segment Reporting Information [Line Items]            
Ownership percentage of noncontrolling shareholder 10.00% 10.00% 10.00% 10.00%   10.00%