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Segment Reporting (Details Textual)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Non-US    
Segment Reporting Information [Line Items]    
Percent of consolidated net sales 6400.00% 54.00%
Mobile Connectivity | Mobile Comm Product Sales    
Segment Reporting Information [Line Items]    
Percent of consolidated net sales 18.00% 20.00%
Mobile Connectivity | VSAT Airtime Service Sales    
Segment Reporting Information [Line Items]    
Percent of consolidated net sales 51.00% 48.00%
Intertial Navigation | FOG-based Guidance and Navigation Systems    
Segment Reporting Information [Line Items]    
Percent of consolidated net sales 16.00% 16.00%