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Segment Reporting - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Mobile connectivity | Mobile Comm Product Sales
Segment Reporting Information [Line Items]
Percent of consolidated net sales	18.00%	21.00%	18.00%	21.00%
Mobile connectivity | VSAT Airtime Service Sales
Segment Reporting Information [Line Items]
Percent of consolidated net sales	53.00%	51.00%	53.00%	50.00%
Inertial navigation | FOG System Sales
Segment Reporting Information [Line Items]
Percent of consolidated net sales	18.00%	16.00%	16.00%	15.00%
Non-US
Segment Reporting Information [Line Items]
Percent of consolidated net sales	59.00%	59.00%	58.00%	53.00%
Singapore
Segment Reporting Information [Line Items]
Percent of consolidated net sales	10.00%		10.00%

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- Definition

Percent of Consolidated Net Sales

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- Definition

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