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Legal Proceedings - Narrative (Details) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2020 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($)
Loss Contingencies |  |  |  |
Total gain (loss) on litigation settlement |  | $ 0 | $ (19,619) | $ (1,000)
Lufthansa |  |  |  |
Loss Contingencies |  |  |  |
Loss contingency, damages paid, value | $ 1,300 |  |  |
Lufthansa | Astronics Advanced Electronic Systems Corp. | Patent Infringement | Germany |  |  |  |
Loss Contingencies |  |  |  |
Litigation settlement, amount awarded to other party, excluding interest |  | 3,200 |  |
Loss contingency accrual |  | 4,700 | 1,000 |
Incremental reserve |  |  | 3,500 |
Indirect Sales | Astronics Advanced Electronic Systems Corp. | Patent Infringement | Germany |  |  |  |
Loss Contingencies |  |  |  |
Loss contingency, estimate of possible loss, excluding interest |  |  | 11,600 |
Litigation settlement interest |  |  | 4,500 |
Total gain (loss) on litigation settlement |  | 16,700 | $ 16,100 |
Interest rate accrued above bank rate until final payment |  |  | 0.05 |
Indirect Sales | Astronics Advanced Electronic Systems Corp. | Patent Infringement | Germany | Selling, General and Administrative Expenses |  |  |  |
Loss Contingencies |  |  |  |
Litigation settlement interest |  | $ 600 |  |

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