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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%

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