Annual report pursuant to Section 13 and 15(d)

Legal Proceedings - Narrative (Details)

v3.20.4
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