Segment Reporting - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Non-US
Segment Reporting Information [Line Items]
Percent of consolidated net sales	58.00%	59.00%	60.00%	58.00%
Singapore
Segment Reporting Information [Line Items]
Percent of consolidated net sales	11.00%		11.00%	10.00%
Mobile connectivity | Mobile Comm Product Sales
Segment Reporting Information [Line Items]
Percent of consolidated net sales	16.00%	18.00%	17.00%	18.00%
Mobile connectivity | VSAT Airtime Service Sales
Segment Reporting Information [Line Items]
Percent of consolidated net sales	57.00%	53.00%	54.00%	53.00%
Inertial navigation | FOG System Sales
Segment Reporting Information [Line Items]
Percent of consolidated net sales	16.00%	18.00%	16.00%	16.00%