Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Narrative (Details)

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Acquisitions - Narrative (Details) - USD ($)
$ in Thousands
6 Months Ended
Dec. 01, 2017
Apr. 03, 2017
Jun. 30, 2018
Jul. 01, 2017
Business Acquisition [Line Items]        
Acquisition of Business, Net of Cash Acquired     $ 0 $ 10,223
Custom Control Concepts LLC | Astronics Custom Control Concepts Inc.        
Business Acquisition [Line Items]        
Acquisition of Business, Net of Cash Acquired   $ 10,200    
Cash acquired   $ 500    
Period goodwill and purchased intangible assets are expected to be deductible for tax purposes   15 years    
Telefonix, Incorporated | Astronics Custom Control Concepts Inc.        
Business Acquisition [Line Items]        
Acquisition of Business, Net of Cash Acquired $ 103,800      
Cash acquired $ 200      
Period goodwill and purchased intangible assets are expected to be deductible for tax purposes 15 years