Annual report pursuant to Section 13 and 15(d)

Profit Sharing/401(k) Plan - Narrative (Details)

v3.20.4
Profit Sharing/401(k) Plan - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Astronics Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Roll Forward]      
Defined contribution plan charges recognized $ 3.3 $ 10.0 $ 8.3